2. 1934, graduated from national chiao tung university Institute of Mechanical and Power Engineering, and was once a professor at Massachusetts Institute of Technology and California Institute of Technology. Thanks to the efforts of President Mao Zedong and Premier Zhou Enlai, he returned to China. 1959 joined China * * *. He has served as the director of the Department of Modern Mechanics of the University of Science and Technology of China, the director of the Institute of Mechanics of the Chinese Academy of Sciences, the seventh deputy minister of the Ministry of Machinery Industry, the deputy director of the Commission of Science, Technology and Industry for National Defense, the chairman of the China Association for Science and Technology, the honorary chairman of the China Association for Science and Technology, the vice chairman of the 6th, 7th and 8th Chinese People's Political Consultative Conference, the member of the Department of Mathematics and Physics of the China Academy of Sciences, and the honorary chairman of the China Aerospace Society.