Director of Chinese Disease Control and Prevention Center from 2004 to 2017.

Distinguished Professor of Tsinghua University;Vice President of the Chinese Preventive Medicine Association, and Executive Director of the Chinese Medical Association. Director of the Institute of Liver Diseases of Beijing Medical University; Vice President of Beijing Medical University; 

Deputy Director of the Department of Medicine at Peking University, and Deputy Director of Ministry of Science and Technology of China Biotechnology Development Center.

Won the first prize of National Science and Technology Progress Award, the first prize of Science and Technology Progress of the Ministry of Health, the National Science and Technology Progress Special Award, and the National Outstanding Youth Science Fund.