1983.08 ——1987.10, assistant engineer and chief clerk of the highway department of the Ministry of Communications (in the meantime:1986.09 ——1987.10 in Irvine, England)
1987.10 ——1990.12, engineer, Highway Department, Ministry of Communications;
1990.12 ——1994.04, Project Officer of the World Bank Representative Office in China;
1994.05 ——1997.10, Deputy Director of the Highway Department of the Ministry of Communications (during this period: 1996.09 —— 1997.07, studied in the Department of Land Economics of Cambridge University, England, and obtained a master's degree in economics).
1997.10 ——1998.08, researcher, Highway Management Department, Ministry of Communications;
1998.09——200 1.08, Deputy Chief Engineer, Planning and Research Institute, Ministry of Communications;
2001.09 —— May 2003, Chief Engineer and Vice President of Planning and Research Institute of Ministry of Communications;
2003.06—2004. 1 1, chief engineer and vice president of the Planning and Research Institute of the Ministry of Communications;
2004. 12——2006.09, President of the Planning and Research Institute of the Ministry of Communications, Deputy Secretary of the Party Committee, presided over the administrative work of the Institute;
2006.09—2007. 1 1, President of Highway Research Institute of Ministry of Communications and Deputy Secretary of Party Committee;
2007. 12——2008.03, Director of Highway Department of Ministry of Communications;
2008.03—2009.03, Director of Highway Department, Ministry of Transport;
2009.03——20 14.03, chief planner of the Ministry of Transport;
2014.03 —— 2014.10, member of the party group and chief planner of the Ministry of Transport;
20 14.10 —— 2016.04 member of the party group, chief planner and director of the comprehensive planning department of the Ministry of Transport (during his temporary post: 2014, 12 to 20 15 in Sichuan)
20 16.04—— Vice Minister of the Ministry of Transport, member of the party group, chief planner and director of the comprehensive planning department.