| 2003— | Vice-Chairman, 10th Law Committee of the NPC | |
| 1992—2003 | Member, CPPCC, Municipal Committee Beijing Municipality | |
| 1966—1992 | Associate Professor, Beijing University of Technology Beijing Municipality | |
| 1966—1992 | Lecturer, Beijing University of Technology Beijing Municipality | |
| 1966—1992 | Professor, Beijing University of Technology Beijing Municipality | |
| 1966—1992 | Dean, Beijing University of Technology Beijing Municipality | |
| 1966—1992 | Vice-President, Beijing University of Technology Beijing Municipality | |
| 1957—1960 | Graduate Student, Fudan University, Physics Department Shanghai Municipality |