From 65438 to 0946, he visited the Soviet Union for three months at the invitation of the Soviet Academy of Sciences. In the same year, at the invitation of Princeton Institute for Advanced Studies, he served as a researcher and taught at Princeton University. From 65438 to 0948, he was a professor at the University of Illinois. After returning to China from 65438 to 0950, he successively served as Professor Tsinghua University, director of the Institute of Mathematics of China Academy of Sciences, member and deputy director of the Department of Mathematics, director and vice president of the Department of Mathematics of University of Science and Technology of China, director of the Institute of Applied Mathematics of China Academy of Sciences, vice president of China Academy of Sciences and member of the presidium. He also served as chairman of chinese mathematical society for many times. In addition, Hua served as the first, second, third, fourth and fifth members of the Standing Committee and vice chairman of the Sixth National Committee of the China People's Political Consultative Conference.
Hua is a world-renowned mathematician. In the Smithsonian Museum, Chicago Museum of Science and Technology and other famous museums, his name is tied with a few classic mathematicians. Elected as a foreign academician of the American Academy of Sciences, a member of the Third World Academy of Sciences and a member of the Bavarian Academy of Sciences of the Federal Republic of Germany. He was awarded an honorary doctorate by Nancy University in France, the Chinese University of Hong Kong and the University of Illinois in the United States.
Hua has made outstanding contributions in a wide range of mathematical fields, such as analytic number theory, matrix geometry, typical groups, automorphic function theory, multiple complex variable function theory, partial differential equations, high-dimensional numerical integration and so on.
Because of Hua's great contribution, many theorems, lemmas, inequalities, operators and methods are named after him. Published nearly 300 monographs and academic papers.
China also advocates the development of applied mathematics and computers according to the reality of China and the international trend. He personally went to 27 provinces and cities to promote the application of mathematical methods for 20 years and made great contributions to economic construction.