(New Year’s experience) Reunion of Taiwan Province youth Spring Festival: I hope cross-strait exchanges will be smoother

  China news agency, Beijing, January 28 th: Reunion of Taiwan Province youth Spring Festival: I hope cross-strait exchanges will be smoother

  China News Service reporter Zhang Xiaotong

  This year’s Lunar New Year is a reunion year that many people have been looking forward to for a long time. Taiwan Province youths who have worked hard in the mainland for many years have returned to Taiwan for the New Year and reunited with their relatives and friends. In an interview with a reporter from China News Service, they expressed their expectation that cross-strait exchanges will be smoother and more convenient in the future.

  Zhang Yuzhong: Reunion with family and tasting hometown food

  Zhang Yuzhong, from Taichung, Taiwan Province, is a "drifting north" youth. Two years ago, due to the epidemic, he stayed in Beijing for the Spring Festival. This year, he finally had the opportunity to return home to reunite with his family.

  "We will post Spring Festival couplets, set off firecrackers, send red envelopes, and go to the temple for a walk, but the New Year’s Eve may be a little different. For example, in Taiwan Province, we will eat a dish called mullet roe, which is a unique food." Zhang Yuzhong said that during the Chinese New Year in Beijing, he would also have an appointment to eat Taiwanese food with friends, but the feeling of returning to his hometown to taste local food is still irreplaceable.

  On New Year’s Eve, Zhang Yuzhong had dinner with relatives and friends at home and enjoyed a hard-won reunion. During the Spring Festival holiday, he traveled with his family. "Actually, I want to stay at home longer, but my mother is a little ‘ Be in a panic ’ Then go out for a walk together. "

  In Zhang Yuzhong’s view, this year’s Spring Festival is particularly strong and has a sense of "global Chinese reunion". Not only did he fly back to Taiwan Province from the mainland, but many of his childhood friends also returned to their hometown for the New Year from the United States, Canada or other places, so it was rare for everyone to get together.

  "It feels really different, plus the weather in Taiwan Province is very good, and everyone gets together and the atmosphere is great." He said that after the holiday, he would stay in Taiwan Province for a while, and then he would return to the mainland to continue his work. "I hope the flight will be smoother then," he said.

  Guo Xueyun: I found interesting differences in wrapping red envelopes for my parents

  Guo Xueyun, a "Taipei girl", finally returned to her family this year after several years of Spring Festival in Beijing. "It is always very happy to see my family, which is a familiar feeling. I will also go to see what convenience stores are selling in Taiwan Province and what restaurants are popular now."

  Guo Xueyun’s flight back to Taiwan Province during the Chinese New Year was generally smooth, but because many Taiwan Province friends who worked in the mainland chose to go back to Taiwan for the Chinese New Year, the price of flights between the two sides was higher.

  "Because my family is not a very traditional family, that is, everyone has a meal on New Year’s Eve." Guo Xueyun said, however, this year she specially wrapped a red envelope for her parents to show her filial piety.

  "I found it very interesting that in Taiwan Province, we would give red envelopes to our parents, but it seems that this is not the case in mainland China." She also communicated with her friends and found that it is a common practice in Taiwan Province to wrap red envelopes for others after work, and to express her feelings to the elders. However, in mainland China, red envelopes seem to be mostly given to the younger generation.

  Guo Xuejun also said that there is a strong atmosphere of Chinese New Year in Taiwan Province. During the Spring Festival, many shops are closed, there are many firecrackers outside, and the New Year’s Eve dinner is more abundant than usual.

  She also observed some changes, including meeting more people talking about their work and life in the mainland on the street, and visiting the night market will also find vendors selling mainland snacks.

  After the holiday, Guo Xueyun will return to Beijing. "Cross-strait relations are very close, so the demand for exchanges is also high." She said that she hopes that there will be more opportunities for young people to communicate with each other in the future, and that there will be more flights to make it convenient for everyone to travel and go home.

  Huang Baixiang: I hope that the warm Spring Festival will be smooth.

  Huang Baixiang, who works in financial leasing in Beijing, returned to his hometown of Kaohsiung in the New Year. He is very excited. "I am working in the mainland, and I am very happy to come back to see my parents and experience the taste of Taiwan Province. My family is also very happy to see me."

  "The weather in southern Taiwan Province is warmer and the annual flavor is very strong. I will go to the temple during the New Year ‘ Bye bye ’ Wait. Like my family, I will also have dinner together and watch TV programs. In fact, it is quite similar to the mainland. " Huang Baixiang said.

  Besides reuniting with his family, Huang Baixiang also met many old friends when he returned to Taiwan Province this time. "Many friends in Taiwan Province are asking when they can go to the mainland, including travel, work, etc. I see that many people are looking forward to cross-strait exchanges." He said.

  Huang Baixiang also told reporters that the flight back to Taiwan Province was more tense and the ticket price was higher than before, but the ticket purchase process was smooth. "I hope that more flights can be opened in the future to facilitate the round-trip between the two sides. It is always a good thing to communicate and communicate more conveniently. "

Strong winds in the north hit Beijing-Tianjin-Hebei and other places, and local gusts of 10 meteorological experts analyzed the causes.

CCTV News:Affected by cold air, some parts of the north have strong winds. According to meteorological monitoring, there are 7 ~ 9 gusts in central Inner Mongolia, northern Ningxia, Shanxi, western Henan, western Hebei, western Beijing, western Liaoning and central Shandong, and the local wind power reaches 10. Why is the gale in the north so strong this time? When will the gale last? Let’s look at the analysis of experts from the Central Meteorological Observatory.

Chen Tao, chief forecaster of the Central Meteorological Observatory:Generally speaking, cold air is more active in autumn and winter, which is prone to windy weather. This round of windy weather has a wide range and strong intensity, and the wind in some areas is extremely extreme in North China and Huanghuai. This time, the cold air force affecting our country is relatively strong, and there are cyclones developing in Bohai area, which will cause a large pressure gradient between high and low pressure, which will cause the air to flow in a large range and form windy weather; The second reason is that today (October 9), the turbulent mixing at high and low altitude is relatively strong and the wind speed at high altitude is relatively high. This turbulent mixing will also lead to further increase of the wind near the ground; The third feature is that there will be some valleys or canyons in some parts of North China and Huanghuai areas, which will cause the narrow tube effect of fluid and further accelerate the airflow, forming local strong winds. Today is the strongest day under the influence of windy weather, mainly concentrated in the area from North China to Huanghuai, especially in Beijing, Tianjin, Hebei, Henan and Shandong, where the wind is still relatively strong, and there will be 5 ~ 6 winds generally, and the gust wind can reach 9 or even 10 or more. On the 10th, cold air continued to move eastward, and windy weather mainly appeared in parts of the eastern part of Northeast China.

Strong convective weather warning: There are thunderstorms or hail in some areas such as Shandong, Anhui, Jiangsu and Shanghai.

  Cctv newsThe Central Meteorological Observatory continued to issue a blue warning of severe convective weather at 10: 00 on September 19:

  It is estimated that from 14: 00 on September 19 to 14: 00 on September 20, there will be 8-10 thunderstorms or hail weather in parts of western Shandong, central and eastern Henan, central and southern Anhui, eastern Jiangsu, Shanghai, northern and southern Hubei, northwestern Jiangxi, northern Zhejiang, southeastern Sichuan, southwestern Chongqing and western Yellow Sea, and the local wind will exceed 11; There will be short-term heavy rainfall in parts of southern Qinghai, south-central Shaanxi, south-central Shandong, central and eastern Henan, Anhui, Jiangsu, Hubei, northern and western Hunan, central and eastern Sichuan, Chongqing, south-central Yunnan, etc. The maximum hourly rainfall is 30-60 mm, and the local area can reach more than 70 mm.

  It is estimated that the main influence period of strong convection is from this afternoon to night.

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  Defense guide:

  1. The government and relevant departments shall, in accordance with their duties, prepare for short-term rainstorm prevention, lightning protection and gale prevention, and the meteorological department shall prepare for artificial hail suppression;

  2. Outdoor pedestrians and staff should reduce outdoor activities and pay attention to stay away from structures such as scaffolding billboards;

  3. Drive poultry and livestock into places with roofs, and close doors and windows to reinforce sheds;

  4. The water operations in relevant waters and passing ships shall take active measures such as returning to Hong Kong to avoid or detour navigation, pay attention to covering building materials at the construction site, and properly arrange outdoor items susceptible to heavy rain, wind and hail;

  5. Check the drainage system of cities, farmland and fish ponds, and prepare for drainage and defense against disasters such as mountain torrents, landslides and mudslides.

People in Light: Interview with Professor Song Hongwei of Jilin University.

editorial comment/note

Recently, Professor Song Hongwei, a famous scholar in the field of nano-optoelectronics, accepted an exclusive interview with invited reporter Xu Wen of Light (School of Electronic Science and Engineering of Jilin University) and reporter Hao Zhendong of Light (Light Academic Publishing Center of Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences). Professor Song Hongwei gave in-depth answers to the topics of rare earth luminescent materials, optoelectronic materials and device application research, looked forward to the future development direction of nano-luminescent research, and shared his personal experience and unique insights.

People in Light is a series of high-end interview columns initiated by Light: Science & Applications. In this issue, we are honored to invite Professor Song Hongwei, a national leader in scientific and technological innovation in the field of nano-luminescence and optoelectronic devices. This interview will show you the outstanding style of an academic leader who dares to be a pioneer, has the courage to break through, is full of energy and is humorous.

Professor Song Hongwei.

Professor and doctoral supervisor, School of Electronic Science and Engineering, Jilin University/State Key Joint Laboratory of Integrated Optoelectronics; The BR Program of Chinese Academy of Sciences (2000), the winner of National Outstanding Youth Fund (2009), the third batch of senior experts in Jilin Province (2011) and the leading "Micro-nano Information Materials and Devices Innovation Team" were selected as the national key field innovation team (2017). He is currently the deputy director of the Luminescence Committee of China Particle Society, a member of the Luminescence Branch of China Physical Society, and a member of the Luminescence Committee of chinese society of rare earths. He is a member of the editorial boards of academic journals such as Nanomaterials, Journal of Nanosciences and Reports, Scientific Report, Current Chinese Science, Journal of Luminescence, and an expert in the evaluation of outstanding scientific research achievements awards and national natural science awards in colleges and universities. Mainly engaged in the research of rare earth luminescent materials, optoelectronic materials and devices; Representative achievements: doping rare earth ions in perovskite nanocrystals was realized for the first time, and quantum tailored luminescent materials with quantum efficiency close to 200% were obtained. This material was used as a fluorescent conversion layer in crystalline silicon batteries, which improved the photoelectric conversion efficiency of the batteries by 3-4 percentage points and the efficiency of reference devices by 20%. It was evaluated as one of the most exciting works in recent years by the highlights of Science. So far in Advanced Material, Advanced Energy Material, Nano Letters, Light: Science and Applications and other important international academic journals have published more than 360 SCI papers, written 2 English monographs, and accumulated more than 10,000 citations of SCI, with the H factor of 60. From 2014 to 2020, they were continuously selected into the list of highly cited scholars in China. Won the second prize of National Natural Science, the first prize of Jilin Province Natural Science, the first prize of Jilin Province Scientific and Technological Progress, the second prize of outstanding scientific research achievements in colleges and universities and other academic awards.

one

Xu Wen, Special Reporter of Light: Professor Song, after you returned to China in 2000, you worked in Changchun Institute of Optics, Fine Mechanics and Physics of Chinese Academy of Sciences (hereinafter referred to as Changguang Institute) and established a research team to study the basic physical problems of rare earth nano luminescent materials. In 2007, you returned to your alma mater, School of Electronics, Jilin University, and your direction changed to focus on nano-luminescence and photoelectric devices. What makes you have such a unique academic track? What factors have had an important impact on your research orientation and academic direction?

Song Hongwei: Academic transformation should not only consider the change of academic microenvironment, but also take into account the development trend of macro environment. First of all, as far as I am concerned, I have to adapt to the changes in the academic environment. When I worked in Changguang Institute, my department was the Key Laboratory of Excited State Physics of Chinese Academy of Sciences (now the State Key Laboratory of Photonics and Applications), and my research direction has always been the "orthodoxy" and "mainstream" of the laboratory. After coming to Jilin University, my laboratory is the State Key Laboratory of Integrated Optoelectronic, and its academic orientation is fundamentally different from the previous laboratory, so adjusting the academic direction is an inevitable choice to adapt to the new academic environment. It’s like a player moving to a new team. If he doesn’t change his style to adapt to the new tactical system, he will risk being reduced from a main player to a bench player. On the other hand, the study of rare earth luminescence and spectroscopy that I have been engaged in began in the 1960s, and it is a somewhat ancient subject. I have always compared it to a classical beauty, and beauty is beautiful, but there are some vicissitudes on her face. For example, CRT and PDP display technologies have always occupied the main position in the display field in the last century, but in this century, with the prosperity of liquid crystal display, they gradually withdrew from the historical stage, and the corresponding rare earth CRT/PDP fluorescent materials naturally lost their original market. If I stick to the countryside in my research, it is tantamount to Don Quixote riding a burly horse and holding a pike to challenge the windmill. After several generations’ efforts, the School of Electronics of Jilin University has formed a traditional advantage in the research of optoelectronic devices.Such as orGaNic electroluminescent devices, gan semiconductor light emitting devices, etc. When I lay out and plan my academic direction, I should not only consider the knowledge background and research foundation of my team, but also consider absorbing the essence of the Institute of Electronic Technology for my study and use, and also consider the differences and complementarities with its existing direction. Based on these factors, I position my team’s academic direction as a new type of nano-semiconductor (such as perovskite) light-emitting and photoelectric devices based on rare earth doping.

Professor Song Hongwei instructs students in the laboratory.

2

Xu Wen, a special correspondent of "Light": Lead halide perovskite materials have recently become the star materials in the photoelectric field. In 2017, you first reported the rare earth-doped lead halide perovskite luminescent materials in the world, which solved the problems of low efficiency and small absorption coefficient of actual quantum cutting luminescent materials; You further used it to improve the efficiency of solar cells, and broke the highest record of efficiency improvement [Ref. 1-2], which caused great repercussions at home and abroad. Why did you think of such a topic? What are your expectations for the future development of this material, and what challenges will the next research face?

Song Hongwei: Quantum-tailored luminescence is a physical concept put forward in 1970s. It refers to a nonlinear luminescence process in which a luminescent substance emits two photons in cascade from a high-energy state through an intermediate state (which can be real or imaginary) under the excitation of high-energy photons. In theory, the quantum efficiency of luminescence can reach 200%. At first, the driving force of research mainly came from finding efficient mercury-free fluorescent lighting materials and PDP display materials. In the 1990s, some scientists proposed to apply quantum clipping luminescence (mainly 988 nm luminescence of Yb3+) to crystalline silicon batteries to improve their photoelectric conversion efficiency, and the research in this field continued until the new century. However, the previous research has not found an ideal material that can be applied. The main reason is that people have been trying to achieve this goal by using the energy transfer process between rare earth ions (such as Pr3+ and Yb3+, Tb3+ and Yb3+), which is restricted by the small absorption cross section and narrow band of rare earth ions 4f-4f transition. In 2013-2014, I also arranged a doctoral student to study the quantum tailoring luminescence between Tm3+-Yb3+ and Er3+-Yb3+ in NaYF4 matrix, but I soon realized the problem and voluntarily withdrew from the position, because I didn’t find a strategy to solve the problem at that time. In 2017, we realized the doping of rare earth ions in CsPbCl3 quantum dots, vaguely feeling that its absorption cross section is high, phonon energy is low, and the energy band is basically matched with Yb3+.(More than twice the transition energy of 7F5/2-7F7/2), have you found the only thrill? So I asked Zhou Donglei, a doctoral student at that time, to try, and this attempt actually succeeded. The material we invented can efficiently convert photons in the ultraviolet to blue light region (300-450 nm) to the ideal response region of crystalline silicon battery, successfully avoiding the energy loss of the battery caused by thermal effect, and improving the photoelectric conversion efficiency of the battery by 20%, far exceeding other fluorescence conversion technologies, comparable to the laminated battery technology, and its method is simpler, cheaper and quite practical. As Professor Gamelin of Washington University, who followed us in the related research, said in the special comment of Science (April 22, 2019): "For solar energy conversion, this combination of materials is almost exactly what you want". Because of this, Professor McGehee of Stanford University, an authoritative scientist in the field of perovskite research, commented: "This is one of the most exciting results I’ve seen in a long time". Personally, I think it is a pity that such a nearly perfect fluorescence conversion material and technology is buried in the laboratory and discarded.I hereby call on this research to attract the attention of the domestic government, capital and photovoltaic industry, and push it to industrialization as soon as possible with the joint efforts of many parties. If we don’t have such a strategic vision, although we are original, we will gradually be surpassed by the United States (it took Gamelin research group only one and a half years to follow our results, attract the attention of American academic and business circles, win prizes, get fund support and even register a company). If it is a challenge, this is the biggest challenge we are facing at present. Of course, on the road of industrialization, we will also face problems such as how to solve the stability of materials and how to realize large-scale, large-scale and low-cost preparation, but these are just stepping stones in the way forward.

Professor Song Hongwei gave an academic report at the academic conference.

three

Xu Wen, a special correspondent of Light: In 2020, you realized rare earth ion electroluminescence in perovskite nanocrystals for the first time [Ref. 3]. What do you think is the future prospect of rare earth electroluminescence in perovskite nanocrystals, and in which industries will it stand out? What difficulties will it face?

Song Hongwei: In the past, there was a view that rare earth ions were not suitable for electroluminescent materials. The main reason for this is that the luminescence of rare earth ions mainly comes from 4f-4f transition, with low spontaneous emission rate and long luminescence life. Under the action of electric field, due to the continuous collision between injected carriers and lattice, the non-radiation transition process of materials will be intensified, which will cause the luminescence quenching of rare earth ions. In 2020, we took CsPbCl3:Sm3+ quantum dots as the luminescent layer and adopted an inversion structure, which initially realized the electroluminescence of rare earth ion Sm3+ in perovskite, and its luminescent color can be effectively controlled from red light to white light. The direct result of this work is to provide a new idea for the field of quantum dot LED(QLED) lighting and display to obtain different colors and stable luminescence through doping. Considering that rare earth ions have rich transitions, especially in the near-infrared and mid-infrared regions, such as Er3+, Tm3+, Pr3+, etc., which are beyond the reach of perovskite bulk materials, and these emission wavelengths are just in the optical communication window, if effective electroluminescence can be realized, it will undoubtedly have very important application value. At present, the electroluminescence of perovskite-doped rare earth materials still faces two major difficulties: the first difficulty is the common problem of electroluminescence of perovskite materials-the stability problem, especially to solve the device failure caused by ion migration under the action of electric field, which is a huge challenge. The second difficulty is the low radiation transition rate peculiar to rare earth ions.In fact, let’s review the development history of organic electroluminescence, which is earlier than QLED luminescence. It is not difficult to find that in the early work, the electroluminescence research of rare earth complexes and precious metal complexes was neck and neck, and even rare earth complexes electroluminescence was more popular because of its narrower emission line and higher color purity. However, because of its low radiation transition rate, it gradually lags behind precious metal complexes in luminous efficiency and brightness. In the electroluminescence of rare earth doped perovskite materials, this problem still exists and can not be ignored. So how to solve this problem? In fact, the research in the fields of surface plasmon physics and microcavity structure design and preparation has made rapid progress in recent 10 years. With the help of this achievement, we can improve the radiation transition rate of rare earth ions through local light field regulation, thus solving the problems of low radiation transition rate and fluorescence quenching under the action of electric field.

four

Xu Wen, a special correspondent of Light: You switched from rare earth luminescence research to perovskite solar cell research around 2014. In just a few years, you have published many heavyweight papers in related fields, especially in solving the stability and spectral expansion of perovskite solar cells [Ref. 4-6]. What unique advantages do you think can be brought to materials and devices by doping, spectral conversion and heterogeneous combination of organic and inorganic materials? What are the research limitations or technical bottlenecks to realize practicality or industrialization?

Song Hongwei: By December 2020, the best photoelectric conversion efficiency of certified single-junction perovskite solar cells has reached 25.4%, while the efficiency of perovskite and monocrystalline silicon laminated cells has exceeded 29%, which has made rapid development. At present, the primary problem that restricts the industrialization of perovskite is not the photoelectric conversion efficiency, but the long-term stability of perovskite batteries and the cost of preparation and use. Because perovskite materials are seriously degraded under the conditions of water, oxygen and ultraviolet light, the service life of devices is greatly limited. This year’s key special plan of the Ministry of Science and Technology supports the research plan of perovskite solar cells with a service life of 10,000 hours, which shows how urgent and important it is to solve the service life problem for practical application. In the past, our research on solving the life problem of perovskite battery mainly focused on the following three aspects: first, the ultraviolet light in the solar spectrum was converted into visible light by fluorescence conversion to improve the illumination stability of solar battery; second, the tolerance factor and structural stability of perovskite materials were improved by doping rare earth ions and transition metals; and third, the water transport structure was introduced into perovskite battery through the design of carrier modification layer to improve the water resistance of the device. Up to now, the reported photoelectric conversion efficiency of the battery is 22.16%, and the long-term service life can reach 5000 hours. In the research of improving the photoelectric conversion efficiency of perovskite batteries, we have been committed to achieving this goal by expanding its spectral response range to the infrared region.One method is to convert infrared light, which is difficult to be used by traditional perovskite materials, into visible light, which is then used by perovskite batteries. However, this method is limited by the luminous efficiency and absorption cross section of upconversion materials and can only be realized in concentrator batteries at present. Another method is to introduce organic heterojunction with infrared response into perovskite battery to expand the spectral response range. At present, we can extend the spectral range of this laminated battery to 950 nm, and the photoelectric conversion efficiency can reach 21.55%. Although this has reached the best level of research on p-i-n battery at present, it is not an ideal result due to many factors. The ideal result at least exceeds the efficiency of single-junction perovskite battery. It should be said that the concept of this battery is advanced, but there are still many problems to be solved on the way forward. In the future, the stacked structure of perovskite and organic heterojunction is likely to be another very important stacked battery besides silicon and perovskite, because it may not only break through the efficiency limit of perovskite single-junction battery, but also have significant advantages in flexibility and wearable devices.

five

Hao Zhendong, reporter of Light: Mr. Song, you have been studying the up-conversion luminescence of local Light field for many years, especially in your work published in Light in 2020 [Ref. 7], which makes the up-conversion luminescence of rare earth increase by four orders of magnitude by using cascade effect; Through the core-shell structure design of upconversion nanocrystals and further combination with perovskite, multi-wavelength narrow-band near-infrared detection is realized. The selective detection of wavelength is realized by frequency modulation excitation. Can this design and control strategy be extended to other rare earth luminescence systems? What new ideas and opportunities do you think the new rare earth luminescent and perovskite composite devices can provide for the development of selective narrow-band photoelectric detection materials?

Song Hongwei: Rare earth ions are rich in species and energy levels, and have produced rich transitions, from deep ultraviolet region to mid-infrared region. In fact, the coupling of rare earth ions with perovskite and other semiconductor photoelectric materials may produce many unexpected results in photoelectric detection. For example, by using the coupling of rare earth ions with 4f-5d transition, such as Ce3+, Pr3+ and Eu2+, with perovskite and other semiconductor materials in high energy state, a new photoelectric detector or high-energy scintillator detector with super-strong solar blind zone deep ultraviolet detection capability and even super-strong high-energy ray detection capability can be developed; Using the rich infrared transitions of some rare earth ions and their coupling with some emerging photoelectric materials (such as Er3+, Ho3+, Tm3+, etc.), many new types of narrow-band infrared photodetectors with special bands can also be developed, which have important applications in military and national defense fields. Rare earth is an important strategic resource in China, and it is also an important research treasure house. With the saturation of traditional research fields and the advent of the information age, the focus of future rare earth research and application development is likely to gradually shift from the traditional fields of magnetism and optics to the photoelectric field. Here, I hope that our younger generation of rare earth researchers will seize the opportunity, get out of the solidified thinking, bravely move forward and March into the unknown field.

six

Hao Zhendong, reporter of Light: Teacher Song, can you share with young scholars how to become an excellent researcher based on your research experience?

Song Hongwei: This is a matter of different opinions. First of all, I want to say that I am a person who "follows my feelings". My hobbies in college were writing poetry and playing chess, and my academic performance was only in the middle, so I don’t think my experience may have universal reference value for young people. Here I would like to share some spiritual things: a person’s life is a long journey, and so is the road to scientific research. Many times, when we walk, our hearts are confused and our steps are confused. So I said, to be an excellent researcher, the first thing is to "persist": persist in learning new knowledge and an ignorant curiosity. Nie Luda, a Chilean poet, said: "I will always walk on the sandy shore, between the mud and the foam. Although the climax will erase my footprints and the waves will blow away the foam, my heart will always be with the ocean and the sandy shore." The heart of our researchers is to be with science forever. Secondly, as an excellent researcher, you should have full confidence. Our ancient Li Bai said, "I am born to be useful" and "If I go out laughing, will my generation be Artemisia?". Our poet Kitajima said, "I tell you, the world, I don’t believe it. Even if there are 1000 challengers under my feet, I will be the 101st". Newton, a scientist, said, "Give me a lever, and I will move the whole earth." I hope our young scholars will always believe in themselves and believe that they can create great miracles in science and technology. Finally, the avenue is invisible, the sound is loud and the sound is loud, and all the laws of nature,Are hidden in darkness and shadows, just like dark matter. Therefore, as an excellent researcher, we should spread our wings of thought, just as Mr. Dai Wangshu wrote in his poem: "I think, so I am a butterfly. After ten thousand years, the light call of a small flower will shake my gorgeous wings through a dreamless and wakeful cloud."

Professor Song Hongwei in Life

Specially invited reporters introduced

Xu Wen, Associate Professor and Doctoral Supervisor, School of Electronic Science and Engineering, Jilin University; He graduated from Jilin University with a bachelor’s degree in 2009, received his doctorate from Jilin University in 2014, was a postdoctoral fellow at Nanyang Technological University in 2015-2016, and was a postdoctoral researcher at JSPS in tokyo institute of technology in 2016-2018. At present, he is mainly engaged in the luminescence regulation of rare earth doped nano-materials and the application research of photoelectric devices. He has undertaken a number of national natural science foundation and provincial and ministerial projects, won the first prize of natural science in Jilin Province, and was invited to give invitation reports at international and domestic conferences for more than 20 times. With the first/correspondent author, he published 60 SCI papers in adv. mater., light: sci & appl., nanolett., angew. chem., nanotoday, adv. funct. mater., ACS nano., nanoenergy and other academic journals, including more than 20 papers with IF>10.0, with a total citation of more than 4,000 times. Apply for/authorize 8 national invention patents.

Rush up like a teenager | Dialogue with Ding Yuxi, the male actor of Chen Qianqian

In Huayuan City, where "women are superior to men", Touy, a young gentleman in Lincheng, pretended to "marry" as a proton, but he did not expect to fall in love in his own "brain tonic" again and again;

Dr. Gao Leng, a male god doctor in the hospital, visited his fiancee who he had never met before, opening an unusual "destiny takes a hand";

During the period of Song Renzong, when scholars and scholars came forth in large numbers, Su Shi appeared in a scientific research.

Recently, Ding Yuxi has appeared frequently on the screen with his different characters. Since winning the first season of "The Actor’s Character", this new generation of actors has gradually become familiar to more audiences.An exclusive dialogue with Ding Yuxi on the front page of entertainment (ID: wenyutouban)I learned about his performance since high school.

Chen Qianqian in Rumors tells the story of a love affair between a screenwriter and the leading actor Touy after she crossed into her own world and became "cannon fodder".

Touy is my first role after The Actor’s Character, and this trust is very important to me."When it comes to becoming attached to Touy, Ding Yuxi deeply regrets.

In the screenwriter’s pen, Touy was deep-minded, fickle and ungrateful, and cheated the secret keel of Huayuan City to cure his heart disease step by step, and tried to capture Huayuan City. After the heroine crossed over, she directly stole the keel for Touy. In Ding Yuxi’s view, this is an important turning point of Touy’s personality change. "His heart disease has been completely cured, and he has no worries about his life. He began to discover some emotions in the world and became a lovely person. I sympathize with Touy on the original story line and can understand him. I am very happy that he can meet Xiao Qian who came through. "

Ding Yuxi thinks that Touy’s loveliness lies in "I thought I knew the routine, but in fact I didn’t know it at all". His "straight masculinity" made him unable to guess the girl’s mind, but he always worked hard to do everything that looked simple. From a society where men are superior to women, he gradually learned to understand and accept things that he didn’t agree with before after integrating into each other’s lives with Chen Qianqian.

As a sweet pet drama, Chen Qianqian in Rumor has a brisk rhythm and continuous reversal, and explores the theme of gender equality through the collision between "women are superior to men" and "men are superior to women". Ding Yuxi thinks,For "gender equality", "in fact, it is equality between people.We must truly respect women from the heart, instead of doing superficial work to satisfy our moral sense of honor. "

In "Too Strong Color" broadcast in the same period, Zhou Shiyu, played by Ding Yuxi, is an indifferent perfectionist, in sharp contrast with Touy, a "dog boyfriend".

In order to play the doctor with high IQ, Ding Yuxi made a lot of preparations. He bought a book "Open a Heart", which describes the daily life of real doctors, and wanted to approach the doctor group through documentary stories. To his surprise, many medical terms are attached at the end of the book. He read these words well in order to speak them confidently and fluently when he meets the relevant lines.

Trying to understand and approach the role is an actor’s daily life. Most of the time, Ding Yuxi is thinking."How to walk into every moment of the role". After the filming, he often suddenly remembered a certain scene and felt that he should have handled it better. Before the work is broadcast, Ding Yuxi will feel uneasy and feel that he is still not close enough to the role; When watching the film, he often feels that "there can be another reaction here, and there can be a better expression."

In Qing Ping Le, which ended not long ago, Ding Yuxi appeared in the camera as a writer Su Shi. He compared the early Su Shi to a sphere with many prominent cones. Later, the cones were no longer so prominent, but the process of "smoothing" still left traces of resistance. Ding Yuxi said that it is impossible to evaluate whether this change from frivolous to calm is good or bad."He (Su Shi) belongs to a living person in that era and cannot be viewed from the perspective of God."

For Ding Yuxi,Different roles and actors are independent people living in different worlds.But at the same time, "Every time I finish a role, a part of their character remains in my character.Because I began to understand his behavior, his thinking logic and cognition. "

When asked which role he liked best, Ding Yuxi finally chose He Xinliang from Eight Minutes of Warmth. "We have no chance to go back to high school and experience seed of love’s feelings and the relationship with parents during the rebellious period.Drama can create such a dream."

Ding Yuxi plays He Xinliang.

Ding Yuxi embarked on the road of performance and had an interesting start.

In high school, in order to experience another life, Ding Yuxi chose to go out to work during the holidays. He worked as a clerk in a coffee shop and a clothing store. Later, he accidentally joined the crew and became an extra actor. The first role he received was a company employee, who asked to wear a small suit, so he put on the old clothes that his cousin couldn’t wear-a dark green leisure suit, and played all day on a cold day.

At first, it was a simple background board. Later, Ding Yuxi slowly received a role with one or two lines. Later, he began to interview advertisements and went to the crew to be a substitute (to take the lead and let the staff better determine the scene)."Slowly, I am eager to be an actor."

With this expectation, Ding Yuxi entered Shanghai Film Art Vocational College to study acting. Dissatisfied with the present situation, with the wish of "learning again", he was admitted to the School of Continuing Education of Shanghai Theatre Academy to study the director department. For him, what he learned in the director department is more of a sense of responsibility as a practitioner. "I hope that in the future, after seeing the role I played, the audience can also get in touch with themselves, have a familiar feeling and start thinking."He said that his ability can’t support the director’s responsibility, and he hopes to direct a work when he has the ability in the future.

Ding Yuxi played a "big role" for the first time, and it can be traced back to "New the legendary swordsman" broadcast in 2018. Ding Yuxi, who played Dong Fangbubai, described himself as "ignorant and fearless, and dared to act like this if he wanted to", but with the increase of his experience, his worries became more and more. "Sometimes I wonder if this is too much or not very good". He hopes that one day he can get through this hurdle, return to his original boldness, andBecome an actor who has skills and abandons them at the same time..

Also in 2018, Ding Yuxi experienced three months without a mobile phone and concentrated on acting in The Actor’s Character, which brought the interpretation of roles such as Xiao Jingyan, Zebra, "Mad Hatter" and rock teacher Dewey. At the end, he won the program championship, and at the moment when the results were announced, he didn’t know how to look. He said that he even thought that moment was just an illusion."And I’m an incomprehensible madman in the real world.".

After the recording is completed, his requirements for himself are to work hard, interview and take the show,"There is a new journey waiting for me.". Next, Ding Yuxi met Chen Qianqian and Touy.

"I am fascinated by the feeling of rushing wholeheartedly and sparingly." Ding Yuxi said,This is the "youthful ambition" that should be there..

Front page of entertainment: When you play the role of Touy, do you have any small designs of your own?

Ding Yuxi:I think the word "design" is a bit subjective, and I can’t tell which ones are designed by me and which ones I feel conform to and naturally reveal. The screenwriter teacher has shaped the role in the script stage, and what we have done is to make the characters in the two-dimensional plane text three-dimensional.

Front page of entertainment: which part did you perform during the audition? Do you remember?

Ding Yuxi:As I remember, it was "it is more than enough to support you with my assets".

Front page of entertainment: What impressed you when the crew filmed?

Ding Yuxi:I have a scene in which I hold Sandy around in a small forest, and I have to smile during the turn. At that time, the flight was fixed, but I was really dizzy. After the transfer, I found that I was 108,000 miles away from the prescribed place. Later, it was changed from a fixed seat to a slide rail.

  

Entertainment front page: What do you think you have gained from The Actor’s Character?

Ding Yuxi:I am very grateful for my decision to participate in this program. I miss the days when I didn’t have a mobile phone for three months. We could only get to know each other through chatting, and I also made some good friends, which made me feel very lucky.

Front page of entertainment: Do you have any roles you want to try in the future?

Ding Yuxi:I especially want to play the Republic of China opera. When it comes to the role, even if I play a shop assistant, I hope I can find a youthful ambition from him at that time.

-END-

Editor-in-chief Yi Yiwu

Author’s point number

Edit three characters

(Some pictures are from the Internet)

Notice of Beijing Municipal Health and Wellness Committee on Printing and Distributing the Administrative Measures for the Connection between Pre-hospital and In-hospital Medical Emergency Treatment i

District Health and Wellness Committees, Social Affairs Bureau of Beijing Economic and Technological Development Zone, tertiary medical institutions, Beijing Emergency Center and Red Cross Rescue Service Center:

  In order to implement the relevant requirements of the Regulations on Pre-hospital Medical Emergency Services in Beijing and continuously improve the quality and efficiency of the connection between pre-hospital and in-hospital medical emergency services, our Committee has formulated the Management Measures for the Connection between Pre-hospital and in-hospital medical emergency services in Beijing (2022 Edition), which are hereby printed and distributed to you. Please implement it carefully.

  The Notice of Beijing Municipal Health and Wellness Committee on Printing and Distributing the Administrative Measures for Pre-hospital Medical Emergency Transport and Intra-hospital Connection in Beijing (Jing Wei Emergency [2019] No.35) shall be abolished at the same time.

Beijing Municipal Health and Wellness Committee    

June 22, 2022  


Administrative Measures of Beijing Municipality on the Connection between Pre-hospital and In-hospital Medical Emergency (2022 Edition)

Chapter I General Provisions

  Article 1 In order to standardize the connection between pre-hospital and in-hospital medical emergency services in this Municipality and ensure the smooth development of medical emergency services for critically ill patients, these Measures are formulated in accordance with the regulations of Beijing Municipality on pre-hospital medical emergency services, the Notice on printing and distributing the guiding opinions on further improving pre-hospital medical emergency services (Guo Wei Yi Fa [2020] No.19) and other laws, regulations and documents, and in combination with the actual situation of this Municipality.

  Article 2 These Measures shall apply to the activities involved in the process of connecting pre-hospital and in-hospital medical emergency treatment within the administrative area of this Municipality and their supervision and management.

  Article 3 The connection between pre-hospital medical emergency and in-hospital medical emergency refers to the process of information exchange and patient handover between pre-hospital medical emergency institutions and in-hospital medical emergency institutions in the process of providing pre-hospital medical emergency services according to the scheduling of the dispatching institutions.

  Article 4 The clients referred to in these Measures are general acute, dangerous and severe patients, and special patients such as public emergencies, infectious diseases, high-risk pregnant women, newborns and "three noes" personnel (unable to work, unable to determine dependents or legal dependents who have no ability to support and no source of income).

Chapter II Institutions and Duties

  The fifth municipal health administrative department is responsible for the supervision and management of the connection between pre-hospital and in-hospital medical emergency; Responsible for planning and establishing Beijing pre-hospital medical emergency information platform. The district health administrative department is responsible for the supervision and management of the connection between pre-hospital and in-hospital medical emergency services within its jurisdiction, and is responsible for promoting the information construction of the connection between pre-hospital medical institutions and in-hospital medical emergency services within its jurisdiction.

  Article 6 Duties of dispatching institutions:

  (a) according to the patient’s condition and the emergency treatment ability of the medical emergency institutions in the hospital, to help establish a green channel, and to inform the medical emergency institutions in the hospital in time to prepare for the reception;

  (two) record and regularly analyze the convergence of pre-hospital and in-hospital medical emergency services, and provide a basis for the supervision and management of pre-hospital medical emergency services;

  (3) Establish a pre-hospital and in-hospital information interconnection mechanism to promote the open integration, joint construction and sharing of medical first aid and emergency information data.

  Seventh pre-hospital medical emergency institutions responsibilities:

  (1) Strictly implement the transport principle of being near, being urgent, meeting professional needs and giving consideration to the wishes of patients and their families, timely transport patients to in-hospital medical emergency institutions with corresponding emergency rescue capabilities, and do a good job in explaining patients and their families, and guide them to establish a scientific and reasonable concept of seeing a doctor;

  (2) Pre-hospital medical emergency personnel should assess and grade the patient’s condition according to relevant standards, and transmit the information and condition data of critical patients to the in-hospital medical emergency institutions at the first time, among which five types of patients, such as chest pain, stroke, trauma, pregnant women and newborns, communicate with the hospital through Beijing pre-hospital medical emergency information platform, pre-hospital medical emergency dispatch information platform, or through instant communication tools such as emergency special green channel APP, and provide patient information in time;

  (3) Pre-hospital medical emergency personnel will transfer patients to in-hospital medical emergency institutions, and both parties will conduct standardized handover and sign the handover form for patients in front of the hospital.

  Eighth hospital medical emergency institutions responsibilities:

  (1) Efforts should be made to improve the reception capacity of critically ill patients, improve the service quality, effectively divert non-critically ill patients through emergency pre-screening and triage, and ensure timely and effective treatment of critically ill patients;

  (two) according to the principle of emergency grading treatment, according to the severity of the patient’s disease, the implementation of pre-inspection and triage, to ensure that urgent, dangerous and serious patients get priority treatment;

  (3) Strictly implement the responsibility system of first diagnosis, and prohibit the behavior of shirking patients and making no contact with emergency referral of critical illness. If it is really necessary to be transferred for treatment due to special circumstances, the first-time doctor shall judge the safety of transfer, contact the receiving hospital, and transfer to other medical emergency institutions in the hospital on the premise of ensuring the safety of patients;

  (4) set up a dedicated telephone line, keep it open for 24 hours, strengthen the application of information technology, ensure timely communication with health administrative departments, dispatching institutions and pre-hospital medical emergency institutions, and receive and feed back information to dispatching institutions and pre-hospital medical emergency institutions as required;

  (5) Equipped with sufficient and available first-aid flat car (or wheelchair), the emergency department shall ensure at least one first-aid flat car to be ready for use at any time, and complete patient handover with pre-hospital medical emergency personnel in time to avoid the detention of pre-hospital ambulances and on-board equipment and facilities.

Chapter III Handover Specification

  Article 9 After receiving the patients transferred by the pre-hospital ambulance, the in-hospital medical first-aid institutions should transfer them to the standby first-aid flat car as soon as possible without occupying the first-aid facilities and equipment of the pre-hospital medical first-aid institutions. The time for critically ill emergency patients to stay on the stretcher of pre-hospital ambulance should generally not exceed 10 minutes.

  Article 10 Handover of general emergency patients: Pre-hospital medical emergency personnel report the patient information to Beijing pre-hospital medical emergency information platform according to the on-site situation of emergency patients; According to the patient information and the ability of first aid in the hospital, the dispatching organization assists in determining the medical first aid institutions to be transferred to the hospital and communicates with the hospital; In-hospital medical emergency institutions receive patients’ diagnosis and treatment information in time, make preparations for receiving medical treatment, and communicate with pre-hospital medical emergency personnel when necessary according to patients’ conditions.

  Article 11 Handover of special patients: If the pre-hospital medical emergency personnel are confirmed to be special patients such as public emergencies, infectious diseases, high-risk pregnant women, newborns and "three noes" after arriving at the scene, the pre-hospital medical emergency personnel will collect the on-site situation and report it to the dispatching agency in time, and upload the patient information to the Beijing pre-hospital medical emergency information platform; According to the relevant regulations, the dispatching organization shall assist in determining the medical emergency institutions in the referral hospital and inform the specific situation of special patients in time; In-hospital medical emergency institutions should be prepared for receiving medical treatment.

  Article 12 Pre-hospital medical emergency personnel will send the patients to the in-hospital medical emergency institutions, and hand over the condition and treatment with the doctors or nurses on duty. Both parties will sign the hand-over form for patients in the front and in-hospital and include it in the medical record management.

  Thirteenth pre-hospital medical emergency institutions and in-hospital medical emergency institutions shall not refuse or delay the rescue work for patients because of the cost. For the "three noes" personnel, pre-hospital medical emergency institutions and in-hospital medical emergency institutions can apply for financial subsidies to the disease emergency relief fund, the social relief fund for road traffic accidents, and the urban and rural medical relief fund in accordance with the relevant provisions of the state and this Municipality.

Chapter IV Supervision and Administration

  Article 14 The municipal health administrative department shall be responsible for the guidance, supervision, assessment and quality evaluation of the connection between pre-hospital and in-hospital medical emergency treatment, and guide the district health administrative department to carry out supervision and management.

  The district health administrative department shall, under the unified leadership of the district people’s government and the operational guidance of the municipal health administrative department, supervise and manage the connection between pre-hospital and in-hospital medical emergency treatment within its administrative area according to law.

  Fifteenth relying on the quality control data of pre-hospital medical emergency in Beijing, the management of pre-hospital and in-hospital convergence will be included in the performance management of in-hospital medical emergency institutions.

  Article 16 The municipal health administrative department shall establish a notification mechanism for the connection between pre-hospital and in-hospital medical emergency, and regularly notify the units that have not carried out the connection between pre-hospital and in-hospital medical emergency in accordance with relevant regulations.

  Seventeenth pre-hospital medical emergency institutions do not transport patients in accordance with the provisions, and shall be punished in accordance with Article 55 of the Regulations of Beijing Municipality on Pre-hospital Medical Emergency Services.

  Article 18 If the in-hospital medical emergency institutions fail to hand over the information of critical patients with the pre-hospital medical emergency institutions in accordance with the regulations or refuse to accept the critical patients transferred by the pre-hospital medical emergency institutions, they shall be punished in accordance with Article 56 of the Beijing Regulations on Pre-hospital Medical Emergency Services.

  Nineteenth these Measures shall be implemented as of June 22, 2022.

  Twentieth approach by the municipal health administrative department is responsible for the interpretation of.

Lawyer’s letter sent to me by Bank of Communications mailbox.

Lawyer's letter sent to me by Bank of Communications mailbox.

A lawyer’s letter is a formal legal document, which is usually issued by a law firm on behalf of a client to safeguard his legitimate rights and interests. Bank of Communications sends a lawyer’s letter in its mailbox, which means that it may involve some kind of legal dispute or affairs. The letter usually has legal effect, which is used to formally notify or warn the other party, clearly put forward legal claims or requirements, and urge the other party to fulfill its obligations within a certain period of time. Lawyer’s letter is not synonymous with court proceedings or judgments, but it can be used as a warning or communication method before litigation.

The possible reasons for the Bank of Communications to send a lawyer’s letter include the customer’s failure to repay the loan according to the contract, breach of contract, handling of disputed accounts, and suspected illegal operation. The main purpose of the bank’s lawyer’s letter is to remind or ask the relevant parties to correct their behavior in time or fulfill their contractual obligations. Banks also hope that the lawyer’s letter will make the other party aware of the seriousness of the incident and try to avoid going into litigation. When you receive a lawyer’s letter, you need to read and understand its contents carefully so that you can take action in time.

Lawyer's letter sent to me by Bank of Communications mailbox.

When you receive a lawyer’s letter from Bank of Communications, you should keep calm, don’t ignore the letter, and don’t act rashly. Read the contents of the lawyer’s letter in detail, including the background of the incident, the focus of the dispute, the legal claims put forward and the time for settlement. Remember to keep the original lawyer’s letter properly and solve the evidence in the future. You can consult a professional lawyer to ensure that you fully understand the contents of the letter and protect your rights and interests in time.

The lawyer’s letter itself is not mandatory, but it has important legal significance. The lawyer’s letter is not a court ruling or an enforcement document, but its content may represent the official position of the sender, so it cannot be ignored. Lawyer’s letter is often a legal means to solve disputes before litigation, which can be regarded as a warning or reminder. Taking a positive attitude to solve related questions quickly is a more sensible way to deal with them.

Lawyer's letter sent to me by Bank of Communications mailbox.

After receiving a letter from a lawyer, many people may panic and think that they are about to face legal proceedings. In fact, sending a lawyer’s letter does not necessarily mean that the other party has filed a lawsuit, but more is an attempt to solve the problem through non-litigation channels. Another misunderstanding is to ignore the seriousness of the lawyer’s letter, or delay the time limit without responding. This kind of behavior may miss the opportunity to negotiate and settle with the other party, and even lead to additional legal risks.

If you find that there is a question after receiving the lawyer’s letter, you should immediately contact the Bank of Communications or the relevant legal affairs department to show your willingness to communicate. In communication, you need to state facts, show your position and provide relevant evidence to support your statement. If contract breach is involved, the positive attitude of being willing to cooperate with the formulation of solutions may contribute to the rapid settlement of disputes. During the whole process, it is recommended to record the negotiation for future reference.

Lawyer's letter sent to me by Bank of Communications mailbox.

After receiving a letter from a lawyer, if you are confused about the content of the letter or think that your rights and interests may be damaged, you should consult a professional lawyer as soon as possible. In complex disputes, the interpretation of legal terms and the protection of legitimate rights and interests need the guidance of professionals. Lawyers can help analyze the legal basis of letters, design reasonable reply strategies, and provide reference opinions for your possible legal actions to ensure that your losses are minimized.

In order to avoid receiving similar letters from lawyers again, it is suggested that you have a higher sense of contract and responsibility in future economic and legal affairs. Be sure to read the terms carefully and understand your rights and obligations when signing the contract, so as to avoid disputes caused by not fully understanding the terms. If you encounter damage to your rights and interests or debt problems, you should take the initiative to contact the other party and handle them properly to avoid expanding contradictions. In the event of a legal dispute, receiving legal advice in time will help reduce unnecessary risks.

Lawyer's letter sent to me by Bank of Communications mailbox.

Lawyer's letter sent to me by Bank of Communications mailbox.

Is it better to put the food in the refrigerator when it is cold or when it is hot? The truth is ……

  Endless leftovers

  What would you do with it?

  In order to avoid waste

  Many people choose to keep leftovers in the refrigerator.

  After that, it is heated and eaten.

  Is this really right?

  Which foods are suitable for the refrigerator and which are not?

  Is it better to put the food in the refrigerator when it is cold or when it is hot?

  The real scientific way is to put the food that can’t be eaten in the refrigerator while it is hot, and the sooner the safer it is.

  In fact, there are bacteria in meals and foods, such as Escherichia coli, a conditional pathogen that is not harmful to human body at ordinary times and can only make people sick when it reaches a certain amount, and Staphylococcus aureus and Salmonella, which are virulent pathogens that will do great harm to human body when the number is small. Once these bacteria proliferate and are eaten by people, there will be symptoms such as abdominal pain, diarrhea, nausea and vomiting, and even life-threatening.

  Temperature has a great influence on the reproduction speed of bacteria in food: when the temperature exceeds 60℃, most bacteria cannot survive; When the temperature is lower than 4℃, the proliferation of most bacteria obviously slows down. And 4℃~60℃ is called the "dangerous temperature zone" of food, during which most bacteria can grow and reproduce quickly.

  Therefore, the longer food is kept at room temperature, the more bacteria will multiply. The purpose of putting food in the refrigerator while it is hot is to reduce the temperature to below 4℃ as soon as possible before bacteria multiply in large quantities, so as to reduce the time for bacteria to multiply rapidly.Therefore, the food that can’t be eaten should be set aside in advance, put in a fresh-keeping box and stored in the refrigerator as soon as possible.

  Q: "If hot dishes are put in the refrigerator, will the refrigerator be injured?"

  A: It won’t hurt. The refrigerator is not that fragile. Although putting food in the refrigerator while it is hot will temporarily increase the temperature of the refrigerator, the temperature sensor of the refrigerator will start cooling when it senses the temperature change, so that the refrigerator can return to a low temperature state.

  What should I pay attention to when saving leftovers?

  1. Try not to eat "saliva dishes"

  The "leftovers" eaten the next day, if all the leftovers are "saliva dishes", the bacteria in the leftovers will definitely increase overnight, so it is not recommended to eat. If you can’t finish a meal, it is recommended to store it with clean tableware before eating. Sorting and storing refrigerated leftovers can avoid cross-infection of bacteria. You can use fresh-keeping boxes, fresh-keeping bags, etc., or attach a layer of fresh-keeping film to the dishes.

  2, storage time should not be long, fully heated before eating.

  Although the leftovers of the previous day can be killed by high temperature or microwave heating, it is not recommended to store the leftovers in the refrigerator for too long.

  How long is it appropriate to refrigerate food in the refrigerator?

  Green leafy vegetables are the most difficult to preserve, so they should be eaten as soon as possible, no more than 3 days, broccoli, cauliflower, etc. for no more than 1 week. Cabbage, peppers, mushrooms, etc. should be packaged and kept dry for a long time.

  Rootstock plants such as carrots and white radishes can be preserved for 2 ~3 weeks at the longest as long as they are packaged.

  Pasteurized milk can be stored in the refrigerator for 3 ~10 days, and it is best to drink it within a few hours after opening.

  Aquatic products and meat can be stored in 0℃ fresh-keeping area for 2 ~3 days if they are cooked soon.

  Fresh eggs can be stored in the cold room for 5 weeks, but the quality of eggs will drop by one grade every week, so they must be eaten as soon as possible.

  Health tips

  First, should the food be put in the refrigerator when it is cold, or put it away when it is hot?

  The food you can’t finish should be put in the refrigerator while it is hot, and the sooner the safer it is.

  Second, what should I pay attention to in the preservation of leftovers?

  Try not to eat "saliva dishes";

  It should not be stored for a long time, and it should be fully heated before eating.

  3. What foods are not suitable for the refrigerator?

  Not suitable for: sweet potatoes, potatoes and other root vegetables; Melon and eggplant vegetables such as tomatoes and eggplants; Tropical fruits such as bananas and lychees.

  Fourth, "Listeria" should be especially vigilant!

  Foods susceptible to listeria are:

  Cold seafood;

  Cooked food and meat stored for too long;

  Ice cream;

  Instant fruit and vegetable salad;

  Fresh milk and goat’s milk without pasteurization;

  Raw mushrooms, bean sprouts that are not fully cooked;

  Cheese made from uncooked milk.

Huawei Pura 70 Ultra mobile phone part configuration exposure: super one-inch RYYB lens, leather back shell.

IT House reported on April 16th that the uncle of blogger @ Kanshan exposed some configurations of Huawei Pura 70 series mobile phones in Weibo tonight. It said that Huawei Pura 70 Ultra will be equipped with a 50-megapixel RYYB lens that is over one inch, as well as a 50-megapixel periscope lens, a 40-megapixel ultra-wide-angle lens and a (front) 13-megapixel AF lens.

In terms of color matching, the machine will provide color matching such as vegetation green, mocha brown, star mans white and star mans black, as well as leather back shell. According to the data released, Pura 70 Ultra will support 100W charging. Other versions of cameras and other configurations are as follows:

▲ Tuyuan @ Uncle Watching the Mountain

Later, blogger @ Digital Chat Station posted that "Huawei Pura 70 Ultra data is really 50Mp 1/0.98" RYYB one-inch super outsole, which is very interesting".

Earlier today, @ Kanshan’s uncle also announced the first sales model and version of the Pura 70 series mobile phone, and said that the Pura 70 Pro mobile phone has no Lezhen version, and this version of the model is for "soy sauce". For details, please refer to the previous report of IT House.

Yu Chengdong, managing director of Huawei and CEO of terminal BG, also told the First Financial Reporter today that "Pura70 can be regarded as P70, and there will be good news in two days." According to sources in the supply chain, Pura has "really changed a lot" on the camera compared with the past. "We started shipping at the beginning of the year. After entering March, there was a small peak of orders. At present, the shipping rhythm is one million (modules) a month, and the quantity will be gradually increased."

Holiday consumption is full of "color" and "new" variety, which injects strong impetus into the sustained improvement of the economy.

  CCTV News:During the Qingming holiday, while going out to enjoy flowers, people also enjoy the spring atmosphere by buying goods with "flowers" elements. On the platform of JD.COM, in the last week, the search volume of "Sakura" elemental products increased by more than two times year-on-year, and the search volume of some products such as "Sakura Series Cup", "Sakura Hand Cream", "Sakura Ring" and "Sakura Cake" increased by more than five times.

  Camping economy, fiery equipment upgrade to meet diverse needs

  During the Qingming holiday, the camping economy continued to be hot, and all kinds of new equipment came into being to meet the diverse needs of different tourists. From convenient "bag camping" leasing to convenient fast-throwing tents, the consumption format and equipment upgrading trend of camping market is obvious.

  In Linjiang Strip Park near the Pearl River in Guangzhou, many citizens set up tents, spread meals and enjoy the spring scenery, which is very pleasant.

  Near the park, there are many rental points that provide camping equipment rental services.

  In the outdoor goods store, the new product "2 seconds quick opening" fast throwing tent has attracted the attention of many consumers.

  Zhejiang is the main tent production base in China. In the production workshop in Shangyu District, Shaoxing City, the new production line that has just been put into operation is working in an orderly and tense manner.

  Tents with high cost performance and strange shapes are welcomed by beginners, while tents with full sense of technology and adapting to different climate and geographical conditions are the choice of advanced players.

  Internet sales platform data show that since March, the turnover of camping tents has increased by 240%, the turnover of shower tents has increased by 150%, and the turnover of three-in-one awning automatic tents has increased by 700%.

  Lightweight equipment with high cycling heat is favored.

  Among the popular outdoor activities during the holidays, besides camping, there are also cycling trips. With the emergence of professional and novel equipment, the riding scenes are becoming more and more abundant and the audience is becoming wider and wider. The data shows that the turnover of cycling clothes, youth bicycles and other equipment has increased significantly. The combination of self-driving and cycling provides more exploration space for cycling enthusiasts.

  In Kunming, Yunnan, it’s just the right time to enjoy spring riding around Dianchi Lake.

  Wearing quick-drying clothes, safety helmets, riding glasses and shoes locks, with the blessing of these professional equipment, riding around Yunnan for more than 100 kilometers, for this group of professional cycling enthusiasts, only needs 3-mdash; Four hours.

  As a fitness and sightseeing activity, the cycling route is not limited to the periphery of the city, and the "4+2" travel mode of combining four-wheeled cars with two-wheeled bicycles is becoming popular.

  The rise of folding bicycles has also allowed more people to join the lightweight cycling team. Upgrading the transmission system and braking system can also greatly improve the riding performance experience.

  Internet sales platform data show that since March, the turnover of cycling clothes has increased by 160% year-on-year, and the turnover of youth bicycles has increased by 260% year-on-year.

  The consumption of traditional business district is booming, and the new experience of characteristic blocks

  During the Qingming holiday, a large number of tourists were welcomed in business circles all over the country, and consumption continued to heat up. According to Shanghai Tourism Big Data Monitoring, during the Qingming holiday, Shanghai received a total of 6.641 million tourists, and the total amount of all-factor tourism consumption transactions including food, accommodation, transportation, travel, shopping and entertainment in Shanghai was 10.68 billion yuan.

  In the past two days, the traditional business districts such as Nanjing Road and Yuyuan Garden in Shanghai have ushered in the peak of passenger flow, and the "time-honored" restaurants are especially favored by tourists and consumers. The sales of a key shopping mall in Nanjing Road exceeded 17.2 million yuan in the first two days of the holiday, and the single-day passenger flow increased by about 74% compared with the holiday period in 2023.

  In addition to popular scenic spots and traditional business districts, many characteristic blocks in Shanghai have launched special activities around different themes. In Daxue Road, Yangpu District, Shanghai, an art installation exhibition combining oil painting and floral art was created with the background of art painting and flower market. At the same time, the introduction of flower green plants, artistic originality, lifestyle and other formats added new experiences to tourists.

  Night Changsha fire "out of the circle" accounts for 70% of night consumption

  As night falls, the lights are on, and the May 1 business district in Tianxin District of Changsha City is full of excitement. In the "huang xing road pedestrian street" in the May 1 business district, tourists can not only shop, but also taste Changsha specialty snacks such as crayfish, stinky tofu and fried sausages.

  Two days before the Qingming holiday, the cumulative passenger flow in the Wuyi business circle in Changsha, Hunan Province exceeded 1.9 million, of which night consumption accounted for about 70% of the total consumption throughout the day.

  Car rental consumption is favored, and orders for Qingming holiday have increased greatly.

  When traveling during holidays, many people choose to fly and take the high-speed train to their destinations, and then play in the local area by renting a car and driving by car. This relaxed and convenient way of traveling is more and more favored by consumers.

  Around Nanjing Lukou Airport, Nanjing South Railway Station and other places, the daily rent of the cheapest model is about 100 yuan. It is very common for passengers to rent a car and travel by car immediately after leaving the airport and high-speed railway station.

  In the underground parking lot of Nanjing Railway Station, many passengers got off the train and went to the car rental station to pick up their cars. According to the staff, after the customer places an order on the mobile phone through a small program, they will prepare all the handover procedures of the vehicle in advance. After the guests arrive, they can check the vehicle information in person and drive away.