1985.08- 1986.08 trainee technician of Laoyingshan Coal Mine, Shuicheng Mining Bureau, Liupanshui City, Guizhou Province;
1985.08- 1989.07 Assistant Engineer, Laoyingshan Coal Mine Technology Section, Shuicheng Mining Bureau, Liupanshui City, Guizhou Province;
1989.07- 1993.04 Deputy Section Chief, Laoyingshan Coal Mine Technology Section, Shuicheng Mining Bureau, Liupanshui City, Guizhou Province (1993 was rated as an engineer in February);
1993.04- 1994.06 Chief of the technical section of Laoyingshan Coal Mine, Shuicheng Mining Bureau, Liupanshui City, Guizhou Province;
1994.06-1995.10 Deputy Chief Engineer of Laoyingshan Coal Mine, Shuicheng Mining Bureau, Liupanshui City, Guizhou Province;
1995.10-1997.10 deputy mine manager of dawan mine, Shuicheng mining bureau, Liupanshui city, Guizhou province;
1997.10-1998.12 mine manager of dachuanbu mine, Shuicheng mining bureau, Liupanshui city, Guizhou province;
1998.12-1999.11Deputy Director of Shuicheng Mining Bureau, Liupanshui City, Guizhou Province;
1999.11-2000.08 General Manager, Vice Chairman and Party Committee Member of Guizhou Panjiang Coal and Electricity (Group) Co., Ltd.;
2000.08-2002.12 General Manager, Vice Chairman and Party Committee Member of Panjiang Coal and Electricity (Group) Co., Ltd., and Chairman of Panjiang Clean Coal Co., Ltd. (concurrently);
2002.12-2007.02 General Manager, Vice Chairman and Deputy Secretary of Party Committee of Guizhou Panjiang Coal and Electricity (Group) Co., Ltd., and Chairman of Panjiang Clean Coal Co., Ltd. (concurrently);
2007.02-2009.06 Member of the Party Group and Deputy Director of Guizhou Coal Administration Bureau (reserved at the director level);
2009.05 Party Secretary of Guizhou Intellectual Property Office;
20 1 1. 10 Party Secretary and Director of Guizhou Intellectual Property Office.