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
Li Ruihuan behind only Hu Jintao. Thus, many Li supporters assumed that he and Vice President Hu would have been the only two PSC incumbents to have their five-year terms renewed at the 16th congress. Thus, he would have been in place likely to assume the post of chairman of the National People's Congress (NPC), a post held by Li Peng prior to the party congress. Some were even expecting that Li Ruihuan would have formed a triumvirate together in the post-16th congress PSC with Hu Jintao and Wen Jiabao. Many expected that such a triumvirate would have relegated Jiang's "Shanghai clique,"