Born in March 1935 and from Fuqing, Fujian. Graduated from Automatic Control Department of Tsinghua University In 1958. As a visiting scholar at University of Illinois at Urbana-Champaign from 1980/02 to 1982/02. Took part in building up the State Key Lab of Intelligent Technology and Systems and served as director of the lab from 1991 to 1996. Current positions: Professor of Computer Science and Technology Department of Tsinghua University. Fellow of Chinese Academy of Science (CAS). Vice-chairman of academic committee of Information Science and Technology College in Tsinghua University. Chairman of Intelligent Control Professional Committee of Chinese Automation Association.