1940- 194 1 worked as the engineering department of Northwest Highway Bureau and Gui Xiang Railway Bureau.
194 1- 1942 intern engineer of American general motors company.
1942- 1943 studied at the graduate school of purdue university in the United States and obtained a master's degree in engineering.
1943- 1944, engineer of Baldwin Locomotive Works, USA.
1944- 1945 as an engineer in Montreal Locomotive Works, Canada.
1946- 1947 organized Shenyang Locomotive and Rolling Stock Manufacturing Company.
1947- 1949 successively served as chief engineer of Shenyang Locomotive and Rolling Stock Manufacturing Company, director of Tiexi Branch, director of Shanghai Cold Casting Wheel Factory and consultant of Taiwan Province Machinery Company.
1950- 1989 successively served as a professor at Tangshan institute of technology, Tangshan railway institute and southwest jiaotong university, 1952- 1957 served as the head of the mechanical department.
1979- 1989, director of China Railway Society.
198 1- 1984 was a member of the first discipline evaluation group of the State Council Academic Degrees Committee.
1985- 1989 Member of the Science and Technology Advisory Committee of the Ministry of Railways.