Chapter 39 first quarter

The Long March of thousands of miles has resigned from the official palace of the Five Dynasties.Temporarily stop at Hengshan and Xiangshui, and parting again.Absolutely transplanted Zhenqianzhi, and sprinkled Li Yuan's blood all over Kyushu.Playing blowing and reciting strings in the mountain city, full of love... This is the school song of National Southwest Associated University.After the July 7th Incident, in view of the current situation in North China, the Nanjing government ordered Tsinghua University, Peking University, and Nankai University to merge into a temporary university to resume classes in Changsha, Hunan.The first half of this song provides us with a rough clue of that period of history.

One day at the end of August 1937, Mei Yiqi, the president of Tsinghua University, stood on the side of the Xiangshui River, looking carefully at the Bible school with a steeple church in front of him.Behind him stood a row of people. They were Jiang Menglin, President of Peking University, Zhang Boling, President of Nankai University, Zhu Jingnong, Director of Hunan Education Department, Pi Zongshi, President of Hunan University, and Yang Zhensheng, representative of the Ministry of Education.On this day, the provisional university preparatory committee headed by Mei Yiqi completed the survey of the school site.

On October 25, 1937, the Provisional University officially opened.During the ceremony, I was worried that the merger of the three schools would cause the church to be overcrowded with all the students.Unexpectedly, there were no more than a hundred students from the three schools who participated in the opening ceremony that day.The principals on the stage looked solemn, and the professors were very anxious.However, the United University did not last long in such a bleak state. On December 13, 1937, just one month after the start of school at Union University, Nanjing fell, and the flames of war approached Changsha again. Mei Yiqi’s report requesting the school to move to Kunming was approved, and Union University had to travel to the southwest again, feeling the mourning of the country again. The pain of losing a home.

In the spring of 1938, some professors went to Yunnan first.The students were divided into two parts, one part was girls and boys with poor physique, they went to Guangzhou via Yuehan Road to Hong Kong and Haiphong, and then entered Yunnan via Dianyue Road; . It was called a tour group, but it was actually a long-distance training like a military operation. After walking 3,500 miles on foot for 68 days, they arrived in Kunming on April 26, 1938, and joined the teachers and students who had arrived earlier. On May 4, 1938, the National Southwest Associated University, which was ordered to reorganize, officially started classes.The United Nations University established the Faculty of Science and Engineering in Kunming, and the Faculty of Arts and Law in Mengzi.Since then, Tsinghua University has embarked on a strange development process.

In this extraordinary period, Mr. Mei Yiqi played a huge role as a "captain".He once said at a meeting: "In this stormy autumn, Tsinghua is just like a boat, drifting in the turbulent waves, someone is catching up with the responsibility of driving it, this person must not retreat, must not shrink back , only muster up the courage and persevere to move forward. Although it feels like a long night at this time, we believe that the sky will be clear soon. At that time, we will sail this boat back to Tsinghua University. By then, he will Only then can you dare to prosecute your innocence to your colleagues and alumni of Tsinghua University." The education of the United Nations University in wartime is not the university education in peacetime. Fortunately, Mei Yiqi has changed the appearance of "governing by doing nothing" and "a gentleman of few words" in the past, and is vigorous and pragmatic. The decisive style quickly opened up the situation. Not only did the United Nations University resume normal teaching order in the shortest time, but some academic research projects that had been suspended for many days also quickly developed, such as Tsinghua’s special research project.

The special research undertaking of Tsinghua University began in the summer of 1934. In 1934, Ye Qisun recommended Wu Youxun to succeed him as the head of the Department of Physics. Due to the lack of specific and complicated routine work, he felt a little lighter on his shoulders.At this moment, Mei Yiqi put the burden of running a special research institute on him again.There are many reasons for entrusting this important task. First, Ye Qisun is the dean of the Faculty of Science and is associated with many special research projects; second, he has a broad academic vision and quick response to the world's advanced science and technology; third, he has a clear goal of saving the country through science. Knowing China's national conditions, he can scratch the itch; fourth, he has a strong sense of responsibility and coordination ability, and can convince the public; class of trust.

Under the leadership of Ye Qisun, Tsinghua's special research undertakings had achieved considerable development before the war. When the dust of the Southwest Associated University was settled, in September 1938, Mei Yiqi once again submitted a letter to the Ministry of Education, asking for permission to continue the work of the research institutes interrupted by the war. The number of research institutes was expanded to 5, that is to say, two more institutes of metal and national census were added. At this time, although the undergraduate teaching of Tsinghua University was merged into the United Nations University and the teaching resources were shared, the academic research of each university was still relatively independent.In particular, the "special research cause" is a gold-lettered signboard of Tsinghua's academic research and an important symbol of Tsinghua's social value.President Mei Yiqi said at the beginning: "Every university has two missions: one is the training of students, and the other is academic research. Tsinghua University fulfills this mission. The way of its development is not limited to effective teaching, but should be Committed to the promotion of research. This is an even more unsustainable job in our country where academics are backward.” This shows the status of academic research in his mind.Based on this situation, Tsinghua University's special research is like a surprise soldier in the hands of Mei Yiqi, and the person leading this powerful team must be someone who lives up to expectations.

Mei Yiqi once again thought of Ye Qisun who stayed in the north for a long time. Therefore, Ye Qisun took up the post and became the chairman of the committee of the Special Enterprise Research Institute of Tsinghua University. The committee members included Mei Yiqi, Chen Daisun, Shi Jiayang, Li Jitong, Li Jixiang, Dai Fanglan, Zhuang Qianding, Ren Zhigong, Wu Youxun, Chen Da, etc. 11 people. On January 7, 1939, Ye Qisun attended the 20th school affairs meeting of Tsinghua University as the chairman of the Institute Committee. This was the first official appearance of Ye Qisun after he arrived at Southwest Associated University.At the beginning of the meeting, Mei Yiqi announced: "Additionally hire Mr. Ye Qisun, the chairman of the Institute Committee of the school, to attend the school affairs meeting." At that time, the school affairs meeting attended the school affairs meeting. ), Wu Youxun (Dean of the Faculty of Science), Chen Daisun (Dean of the Faculty of Law), Shi Jiayang (Dean of the Faculty of Engineering), Shen Lu (Secretary-General), Zhang Zigao (Special Reporter), and Ye Qisun, a total of 9 people, they can be called Tsinghua University The soul of the Tsinghua University has been controlling the course of the ship of Tsinghua during the war.

When Ye Qisun took office as the chairman of the Special Research Institute Committee, the research projects and scale of each research institute were as follows: Aeronautical Research Institute: Cooperate with aviation schools and aviation machinery schools to study various issues of aircraft structure, aircraft material experiments, wind tunnel experiments, and aviation meteorology. (Republic of China) In the 25th year of the Republic of China, a 15-foot-diameter wind tunnel was built with the subsidy of the Nanchang Economic and Aviation Committee. Recently, a 5-foot-diameter wind tunnel was planned to be built in Kunming for experiments.

Radio Research Institute: Cooperating with the Resources Committee, focusing on the manufacture and measurement of various vacuums, the design of short-wave radios, the research of short-wave military radios, secret military radio phones, and the training of specialized telecommunications personnel. Metal Research Institute: Cooperating with the Resources Committee, focusing on X-ray research on the properties and microstructure of metals and alloys, to assist national industrial organizations in solving problems with steel and other metal materials used. Agricultural Research Institute: Cooperating with the Central Agricultural Laboratory and other agricultural machinery institutions, focusing on the problems of pests and diseases of agricultural products in Yunnan Province and its adjacent areas, the study of plant physiology, and the production of raw materials for national defense from agricultural products.

National Census Research Institute: The national census is as important in peacetime as in wartime.But the problem is more complicated.The institute intends to select an area in Yunnan Province to conduct actual research, with a view to making contributions to the census tables, statistical methods, and training of census personnel in a certain period of time. From the main tasks of these institutes, it can be seen that they are not only purely academic research institutions, but also inseparable from the wartime situation in China at that time.This is exactly what Ye Qisun expected.From the beginning of supporting Jizhong to resist Japan, he was deeply worried about the weakness of China's national defense construction.If more national defense talents can be cultivated and higher and newer national weapons can be developed, wouldn't China have greater hopes?So after Ye Qisun took over this special research institute, he immediately turned his attention to national defense research.He wants to do something for the country in his lifetime.Looking at the Special Research Institute from the current perspective, it can be said that it is actually the earliest military scientific research base in China, and Ye Qisun is undoubtedly the founder of this base. Take the Institute of Radio Research, for example.The first in the world to reflect the practical value of radio was the Pittsburgh Radio Station in the United States in the 1920s.Maybe Ye Qisun, who was studying in the United States at that time, had discovered the mystery long ago. Maybe Ye Qisun was really a foresight. In 1933, when Ye Qisun presided over his first recruitment examination for studying in the United States, he did not hesitate to set up instruments and There are two places in the vacuum tube manufacturing industry, hoping that one day China can also catch up with the world trend. This is another door Ye Qisun opened for China. In September 1933, Ye Qisun took advantage of Wu Youxun's vacation in the United States and asked him to order machinery and equipment for manufacturing vacuum tubes in the United States for my country's research and manufacture of electronic tubes. In 1935, when Ye Qisun presided over the Provisional University Preparatory Committee, he predicted that the Anti-Japanese War would not end in a short time, so he transported the heavy vacuum tube manufacturing machine to Changsha in advance. Later, when Nanjing fell, the vacuum tube was transported to Kunming Dapuji , The Radio Research Institute was also re-established there.Even during the period of war, the academic research of Tsinghua Special Research Institute has not stopped, especially in radio, because of better equipment, its achievements are quite impressive: China's first electronic tube is in this institute developed.In terms of military affairs, he has cooperated with the Air Force Academy of the Aviation Committee to study the problem of long-wave orientation, and has designed and manufactured military radio communicators, military secret radio communicators, aviation radio directional devices, and so on.All this cannot but be attributed to Mr. Ye Qisun's foresight. Some people said that the Tsinghua Special Research Institute at that time was "loyalty to the country" and "reserving talents for the country", which is very true.Taking the Radio Research Institute as an example, it not only cultivated a large number of scientific and technological talents, such as Ren Zhigong, Meng Zhaoying, Fan Xuyun, Ye Kai, Lin Jiaqiao, Dai Zhenduo, Zhang Enqiu, Chen Fangyun, Wang Tianjuan, Ci Yungui, etc. Contributed to the improvement of radio technology worldwide. In 1943, Meng Zhaoying went to the United States for a sabbatical. During this year, he chose the precise measurement of the impedance in the metal waveguide, which had just been invented, as his research topic.After a year of hard work, he obtained a patent, and was invited by the mit radiation laboratory to participate in the creative research and development of the radar system in the following year, and developed a transmitting and receiving switch used in the 10 cm band radar system. It has marked the Chinese mark on the development of radio technology in the world. Take the Aeronautics Institute as an example.Perhaps because of the presence of ambitious neighbors, Chiang Kai-shek paid great attention to the defense of China's airspace. Around 1930, the national government not only purchased a batch of aircraft from abroad, but also introduced the relatively advanced Italian aircraft factory at that time.Of course, his concern follows the characteristics of the old Chinese bureaucratic regime eager for quick success, and is different from the focus of Chinese scientists.At that time, more people in the military and political circles advocated the direct purchase of Western aircraft and artillery, while Mei Yiqi and Ye Qisun had a more far-sighted vision.They believe that if they want to change China's disadvantage in the sky, it is not the best policy to solve the urgent need only by purchasing foreign weapons.To fundamentally change this situation, we should focus on two points: one is to develop our own aviation industry, and the other is to develop our own aviation science. If one traces China's aviation history, people will find that Tsinghua University once stood out as a forerunner in the indistinguishable remnant in the vast background.And it was the scientific pioneers headed by Ye Qisun, Mei Yiqi, Gu Yuxiu and others who set the initial background. Everything starts with the history of Tsinghua University. When Tsinghua University was established, there was no engineering school.At the beginning of the establishment of the university, there was only one Department of Civil Engineering, which was ranked after the departments of the Faculty of Science, and there was a bracket with the word "subsidiary" in it.This situation continued until 1932.That is to say, during these five years, the Department of Engineering has been under the Faculty of Science, and Mr. Ye Qisun, as the dean, has been closely connected with the blood of the Department of Engineering. In the 1920s and 1930s, it was the era when China's industry generally sprouted and developed.In view of the current situation and the appeal of the industry, and in order to cooperate with the government's policy of developing science and engineering disciplines, Mei Yiqi, with the support of Ye Qisun and others, separated the Department of Civil Engineering from the sequence of the Faculty of Science and started a new one, adding the Department of Mechanical Engineering And the Department of Electrical Engineering, established another college after Liberal Arts, Science, and Law—the College of Engineering, and Mei Yiqi served as the dean of the College of Engineering. This year, Gu Yuxiu, then dean of the School of Engineering at Central University, was hired to come to Tsinghua University as the first director of the Department of Electrical Engineering.Gu Yuxiu, born in 1902, studied at Tsinghua University from 1915 to 1923. He was a classmate of Ye Qisun. They both studied under the same tutor when they were studying at Harvard University in the United States.While serving as the dean of the Department of Electrical Engineering, he also taught the first-year courses of the Department of Physics, and he was also a colleague of Ye Qisun.Gu Yuxiu is versatile, not only an outstanding natural scientist, but also a famous writer.He was the first Chinese to obtain a Ph.D. in electrical engineering in the United States, and was later elected as a fellow of the American Institute of Electrical Engineering and the American Academy of Sciences.The relationship between him and Ye Qisun's "three fellows" (classmates, fellow teachers, and colleagues) has enabled him to maintain a deep friendship with Ye Qisun.Even though Ye Qisun passed away for many years, even though he was an octogenarian, when he heard that Tsinghua University was going to set up the "Ye Qisun Award", he immediately remitted 500 US dollars to show his support. He also wrote a passionate letter about his relationship with Ye Qisun. My husband's "three-same" relationship is deeply missed.When he was 98 years old, he also wrote an inscription for the book "The Cornerstone of Chinese Science and Technology", calling Ye Qisun "the master of physics, the model will last forever", expressing his deep affection for Ye Qisun Qinjing's memory. In 1933, Gu Yuxiu became the dean of the School of Engineering of Tsinghua University.In the idea of ​​running a school, he coincides with Ye Qisun, an old senior.They believe that engineering and physics should be an inseparable whole.A student of an engineering college must lay a good foundation in physics, and at the same time have relevant knowledge of mathematics and chemistry, and then focus on the development of engineering majors, so that he can go far, go well, and get out of the world.The original engineering department has always been in the sequence of the Faculty of Science. Mr. Ye Qisun required the students of the engineering department to take the same public basic courses as other students in the first and second grades of the university.In the big environment of the Faculty of Science, the Department of Engineering not only does not wither and mutate, but is full of vitality and has both ways.In the practice of establishing the School of Engineering relying on the advantages of the School of Science, Gu Yuxiu not only has the inheritance of the School of Science, but also created many new honors. Tsinghua University first established the Department of Mechanical Engineering with two majors, Motive Force Engineering and Aeronautical Engineering.This aviation project was specially set up for the needs of national defense at that time. In June 1936, the first-level aeronautical engineering students from the School of Engineering graduated, and all 9 students were assigned to work in the Aeronautical Committee.The second class of Aeronautical Engineering 10 students graduated in June 1937, most filling into the Air Force and research departments.During the period of Southwest Associated University, Tsinghua Aeronautical Engineering Group was the main body and expanded into the Department of Aeronautical Engineering. Two batches of students were trained. The first batch graduated in 1939, with only two students; the second batch graduated in 1940, with a total of 10 students. people.These 31 aviation graduates not only played a huge role in the Anti-Japanese War, but also influenced the development pattern of the aviation field in old China and new China.Ning Wei, a graduate of the first class, later went to Oxford University for further study. After receiving a master's degree, he returned to the Department of Aeronautical Engineering of Southwest Associated University to teach.Liang Shoupan, a graduate of the second level, went to the United States for further study. After obtaining a master's degree, he returned to the Department of Aeronautical Engineering of Southwest Associated University to teach. After the founding of New China, he presided over the research of various types of missiles and made outstanding contributions. He was elected as an academician of the Chinese Academy of Sciences and an international aerospace engineer. Academician of the Academy of Sciences.Li Huamin (female), a graduate of the fourth grade, has served as a researcher of the American Aviation Advisory Committee and Brooklyn University, director of the Solid Mechanics Research Office of the Chinese Academy of Sciences, and an academician of the Department of Technical Sciences.Shen Yuan later went to the University of London for further studies and received a Ph.D., and returned to China in 1946 as an associate professor in the Aeronautical Engineering Department of Tsinghua University, and later served as the president of Beihang University and one of the founders of the school.He is also the chairman of the China Aeronautical Society.It is worth mentioning that it was his inspiration and inducement that enabled Chen Jingrun to march towards the "Goldbach Conjecture".His classmate Tu Shou'e was admitted as a public-funded international student in the aviation department after graduation. After returning to China, he made great contributions to the missile and space launch of New China. He was elected as an academician of the Chinese Academy of Sciences and won the "Two Bombs and One Satellite" meritorious medal. Speaking of this, we should not forget Ye Qisun's pioneering contributions in the field of aerospace. At that time, as far as the country is concerned, the word "aviation" was unfamiliar to other universities. Only Tsinghua University established the aeronautical engineering major in 1932.After September 18, the aggression of Japanese imperialism was fully exposed, and the issue of China's airspace security suddenly became prominent. Therefore, the most urgent task is to train China's aviation talents as soon as possible.As far as common sense is concerned, the trainees of aviation talents must have completed at least 4 years of undergraduate studies. Calculated in this way, the first batch of aviation graduates in my country will not be produced until after 1936.But the situation does not allow this kind of stable training plan. what to do? At this time, Ye Qisun was in charge of Tsinghua University's first recruitment of publicly funded international students.He judged the situation and resolutely decided to recruit three students in the first ad hoc aircraft manufacturing department.Considering that there are no aviation majors in domestic universities, candidates are only required to have general mechanical knowledge during the exam. After being admitted, they will go to Tsinghua University to concentrate on supplementary courses in aviation.This was a last resort, but at that time, only by using this method could we catch the first bus to study in the United States and lose no time in cultivating our own aerospace talents. Many years later, Ye Qisun's haste to get a return that even he could not have expected - China has thus won an era of aerospace of its own. Since 1933, there has been a quota of at least one publicly-funded international student in the Aviation Department every year. Qian Xuesen and Zhao Jiuzhang were among the second batch of publicly funded overseas students in 1934.Their majors in the United States are all related to the sky, one is aviation, the other is high-altitude meteorology... Ye Qisun gave them a chance, and they gave China an era. Thanks to Tsinghua University's precautions, China Aviation Construction has achieved remarkable results in the initial stage. The Nanchang Aviation Wind Tunnel is an example. The wind tunnel is an essential and important device for aircraft experiments and research.The first wind tunnel in Tsinghua University was designed and presided over by Professor Wang Shizhuo. The tunnel was only 5 feet in diameter and was completed in April 1935.Although it is a small wind tunnel, it has trained many famous experts and scholars for China.After Qian Xuesen was admitted as a public-funded international student, he followed Ye Qisun's arrangement and took up majors under the guidance of Professor Wang Shizhuo. Many experiments were completed here. Tsinghua University's aeronautical engineering faculty was close to the level of Western developed countries at that time. The teachers Wang Shizhuo and Feng Guilian were both graduates of Tsinghua University, and they went to the Massachusetts Institute of Technology to study aeronautical engineering and obtained a master's degree. In February 1936, American aviation expert Walden was recommended by von Karman, an American scholar known as the "father of the supersonic era", to teach at Tsinghua University, which greatly strengthened the teaching staff of Tsinghua Aviation.Von Karman visited Tsinghua University in 1929 and suggested that Luo Jialun open aeronautical engineering courses, but Luo Jialun did not listen to the opinion of the American uncle.When President Mei Yiqi was preparing to build the Engineering College, he wrote to von Karman, asking him to hire aviation experts on his behalf, so von Karman responded eagerly to Mei Yiqi's request. Under the guidance of Hua Dunde, Tsinghua University has successively built two wind tunnels, including the Nanchang Wind Tunnel. When the Nanchang Dafeng Tunnel was about to be completed, the Aviation Research Institute of Tsinghua University invited von Karman to inspect and guide. Regarding the Dafeng Tunnel in Nanchang, many years later, von Karman revealed details related to it in his biography—— When I arrived in Nanchang in the summer of 1937, the wind tunnel was nearly complete—grouting was in progress, blades had been ordered, and the balancing equipment had been completed.The wind tunnel was one of the largest in the world at the time, 50 percent larger than Caltech's. Now that Japan is ahead and China is behind, the Chinese want to catch up and catch up in the same way.They respectfully asked me, China's honorary advisor, to express my opinion on the long-term prospects of China's aviation research. My task now becomes how to persuade Chiang Kai-shek and Mrs. Chiang to do what is most effective.At that time, Mrs. Jiang was the Secretary-General of the Aviation Committee.The mission was carried out smoothly and happily. We arrived in Beiping on July 6 and held a meeting with senior military generals and key figures from Tsinghua University on the top floor of the Beijing Hotel.Before leaving, they told me that they would invite me to discuss with the generals of the Air Force, and at the same time they would arrange to pay a visit to Chiang and his wife... We stayed in Peiping for one day. On the 7th, we took the special express train on Jinpu Road to go south to Nanjing. We were invited to the Air Force Academy and visited other aviation research facilities. Crossing the river to Nanjing, rested for one night, and met General Zhou Zhirou, director of the Aviation Committee, the next morning.After the Saturday meeting, we flew to Nanchang, where the Chinese Air Force Command is located.Here, we were able to visit this core weapon base preparing to resist Japan... I saw the factory built by the Italians for China, and the production of Italian aircraft has begun... The climax of the trip to China was having lunch with Chiang Kai-shek and his wife in Guling on the banks of the Yangtze River.After dinner, when the topic of aviation research came up, Madam Jiang asked me tactfully in her capacity as chief of the Air Force: "I am not ashamed to ask in front of the master, please explain the wind tunnel." I tried my best to explain to her, I mentioned She paid attention to the relative movement between the plane and the airflow, and how the wind tunnel in the laboratory simulated the real situation of the plane in the sky. After I finished speaking, she smiled and said: "I don't fully understand what you mean, but judging from your enthusiasm and seriousness in explaining the wind tunnel, I think it is very important. Let's do it this way. I agree that China has a wind tunnel." I can feel that she understood everything I said to the letter, but how clever and tactful she was in answering this way, I mean I finally convinced the Jiangs that the development of the Chinese Air Force can't wait to continue to study... …("The Cornerstone of Chinese Science and Technology", pp. 185-186) From von Karman's memories, we can understand that there are actually variables in the investment and construction of the Nanchang Dafeng Tunnel. If Tsinghua University did not invite foreign aid, or von Karman's lobbying, "I agree that there is a wind tunnel in China." Such authoritative discourse may not appear, so there will be no appropriation of 3.53 million yuan successively, and the follow-up long-term prospect of China's aviation research is just empty talk.This is the reality in China.The driving force behind Mr. von Karman's coming to China is the scientists of Tsinghua University.In order to get China's aviation industry out of the quick success and into a structure that can be developed in the long run, they have made various efforts. Nanchang Dafeng Tunnel is a symbol.It was the largest wind tunnel in Asia at that time and one of the largest wind tunnels in the world.The construction of such a large and complex system project involves many disciplines and departments, and also requires the cohesion of various social forces, including the full attention of high-level dignitaries.At that time, apart from Tsinghua University, no other university in China had such capability and influence. On the other hand, the Nanchang Wind Tunnel is also a comprehensive test of Tsinghua University's achievements in science and engineering disciplines and collaboration capabilities.It can be said that Gu Yuxiu and Zhuang Qianding are the planners of the Nanchang Dafeng Tunnel. Not only experts such as Hua Dunde, Feng Guilian and Zhang Jieqian and all aviation students participated in the construction, but Wu Youxun, the director of the Department of Physics, also sent the ninth Under the guidance of Professor Ren Zhigong and assistant teacher Zhang Jinglian, Dai Zhenduo, a student at the first grade, developed an instrument for measuring wind tunnel fluctuations and wrote a high-quality graduation thesis.This fine tradition of science and engineering cooperation started from Ye Qisun and Gu Yuxiu and has been passed down.Many years later, Gu Yuxiu was delighted to hear that Wang Ganchang had won the Ho Leung Ho Lee Foundation Excellence Award. Recalling the outstanding achievements of the School of Science and Engineering of Tsinghua University, Gu Yuxiu could not help but write to Wang Ganchang with emotion: My brother graduated from Tsinghua University in 1929, when I had just returned to teach at Zhejiang University. In 1932, my brother received his Ph.D. from the University of Berlin. In the fall of that year, I returned to Tsinghua University to teach. Tsinghua University planned to establish an engineering school. I thought it was not easy because the conditions in Beijing (at that time) were very poor. Outstanding talents (including Yang Zhenning, Li Zhengdao, Zhou Guangzhao, Zhu Guangya, etc.), and the School of Engineering has also benefited from physics and mathematics (Chen Shiingshen, Hua Luogeng, etc.) and developed.Since the founding of New China, Tsinghua Institute of Technology has provided many construction talents for the country, and now there are many people in charge of the central government and various provinces and cities (such as Zhu Rongji, Hu Jintao, Wu Bangguo, Huang Ju, etc., and governors of many provinces). ("The Cornerstone of Chinese Science and Technology", p. 19) In fact, Gu Yuxiu was once a teacher of Comrade Jiang Zemin.After the victory of the Anti-Japanese War, he served as the director of the Shanghai Municipal Education Bureau. During this period, he taught electrical engineering and computing calculus courses at Shanghai Jiaotong University.As a student of Jiaotong University, Jiang Zemin took his calculus of operation as an elective.Many years later, when Jiang Zemin, who was already the leader of the party and the country, visited the United States, he also made a special trip to visit Mr. Gu Yuxiu who had settled in the United States, and recounted the relationship between teachers and students.At this time, Gu Yuxiu was over 80 years old, but he was still pursuing and exploring unremittingly in the field of science. According to data, Ye Qisun was the chairman of the special committee, which was the period of great development of the aviation research institute. Mei Yiqi wrote when summarizing the achievements of the Institute of Aeronautics during the Anti-Japanese War: (1) Complete the design of the helicopter. (2) Complete the design of the three-layer board machine. (3) Design and manufacture models using domestic materials. (4) Test the helicopter control model. (5) Machines for manufacturing three-layer boards. (6) Develop beef jelly and soybean gum. (7) Study Lac. (8) Study wind tunnel disturbance scale. (9) Complete self-made elastic mechanics equipment. (10) Complete the construction of the aviation library. (11) The Songming Meteorological Observatory was relocated to the campus of the United Nations University. (12) Edit aviation books, complete (a) aerodynamics, (b) aircraft materials, (c) aeronautical materials, (d) aircraft model manufacturing, (e) theoretical meteorology. ("The Cornerstone of Chinese Science and Technology", p. 176) In addition, the Agricultural Research Institute, the Metal Research Institute and the National Census Research Institute all achieved outstanding results during this period.It is worth mentioning that the Director of the Metal Research Institute is Mr. Wu Youxun, the Director of the National Census Research Institute is Mr. Chen Da, and the Director of the Agricultural Research Institute is concurrently served by Mr. Ye Qisun.The Agricultural Research Institute at that time had made great achievements in breeding, disease resistance, pathology, and insect research.It is unbelievable that a physicist is also the director of the Agricultural Research Institute, but it is a real thing that happened.The agricultural scientific research enterprise initiated by the Agricultural Research Institute of Tsinghua University flourished after liberation.The author’s unit is just across the road from the Chinese Academy of Agricultural Sciences. When walking in the compound of the Chinese Academy of Agricultural Sciences, every time I think of Mr. Ye Qisun’s relationship with the Chinese Academy of Agricultural Sciences, and that there may be descendants who have been influenced by him in this compound, I just There is a different feeling. Under the leadership of Ye Qisun, Tsinghua University's special research has actually stepped out of the scope of academic research in universities and has important national defense significance.In many fields, they have completed the pioneering and developmental work that has never been seen before.