1970.12-1977.03 Army service; 1977.03- 1978.05 Zhangqiu post office staff; 1978.05- 1988.06 Internal Affairs Officer, Deputy Chief and Chief of Secretarial Section of Public Security Unit of Zhangqiu County Public Security Bureau (during this period: 1984.08- 1986.07 students of Jinan People's Police School); 1988.06-1991.10 Deputy Political Commissar of Zhangqiu County Public Security Bureau; 1991.10-1995.11Zhangqiu Public Security Bureau Director and Party Secretary; 1995.1-1998.05 Zhangqiu Municipal Committee Standing Committee, Secretary of the Political and Legal Committee, Director of the Municipal Public Security Bureau and Secretary of the Party Committee; 1998.05-20010.07 Deputy Director and Party Committee Member of Jinan Public Security Bureau; 200 1.07-2003.06 Deputy Director of Jinan Public Security Bureau and Deputy Secretary of the Party Committee (deputy department level) (1999.08-2001.12 studied economic management in the amateur undergraduate class of the Central Party School); 2003.06-2003.10 Director of Linyi Public Security Bureau and Secretary of the Party Committee (deputy department level); 2003. 10—— Deputy Mayor of Linyi City, Director of the Municipal Public Security Bureau and Secretary of the Party Committee (during this period, he studied in the law graduate class of China University of Political Science and Law from September 2005 to July 2007).