Hu Jintao denounced during the Cultural Revolution, an event that (together with his relatively humble origins) apparently had a deep effect upon Hu, who diligently tried to clear his father's name. He joined the Communist Party of China (CPC) in April 1964 and began to work as an engineer in July 1965 after he graduated from the Water Conservancy Engineering Department at Tsinghua University, where he majored in the study of hub hydropower stations. During his time at Tsinghua, he met his wife Liu Yongqing. In 1968, Hu volunteered for his service in Gansu and worked on the construction of Liujiaxia Hydroelectric
He Jintao Chengde cavalry soldiers and defeated them, almost capturing the officer in iron mask, causing much apprehension among the Chengde soldiers. After a subsequent campaign that Tian conducted against Li Shidao the military governor of Pinglu Circuit (平盧, headquartered in modern Tai'an, Shandong), in which He Jintao made contributions, He Jintao was given the honorary imperial censor title of "Shiyushi" (侍御史). By 829, He Jintao was serving under Shi Xiancheng, who was ruling Weibo in "de facto" independence from the imperial government. However, as at that time, imperial forces were close to defeating the rebel general Li Tongjie, who controlled the