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
Hu Jintao Central Party School, which was convenient for him to bring up his own supporters among senior CPC cadres. Hu was also put in charge of the ideological work of the CPC. Although Hu was considered heir apparent to Jiang, he always took great care to ensure that Jiang be at the center of the spotlight. In late 1998, Hu promoted Jiang's unpopular movement of the "Three Stresses" "stress study, stress politics, and stress healthy trends" giving speeches to promote it. In 2001, he publicized Jiang's Three Represents theory, which Jiang hoped to place himself on the same level as other