2007—2013 | Vice-Chairman, Autonomous Region People's Government Guangxi Zhuang Autonomous Region | |
2003—2008 | Member, 10th Education, Science, Culture and Health Committee of the NPC | |
2002—2007 | President, China Agricultural University Beijing Municipality | |
1998—2003 | Member, 9th Education, Science, Culture and Health Committee of the NPC | |
1995—2002 | Vice-President, Beijing University Beijing Municipality | |
1993—1998 | Member, 8th Education, Science, Culture and Health Committee of the NPC | |
1992—1998 | Dean, Beijing University, Biology Department Beijing Municipality | |
1987—1992 | Professor, Beijing University Beijing Municipality | |
1987—1992 | Associate Professor, Beijing University, Biology Department Beijing Municipality | |
1983—1987 | Student, University of Washington USA, Washington |