上山下乡运动
During the Down to the Countryside Movement, Tan worked as a sent-down youth in Changning County, Sichuan. After the resumption of university entrance examination, Tan was admitted to Chongqing Normal University and received a degree on political history. After college, he was assigned to Yibin department of education, and later a provincial party-run school. He taught administrative management. He was given the title of "professor" in December 1992.