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 whether or not he was as ill as he had claimed. Martin Seiff of United Press International commented on Putin and Hu, "Both are tough and able authoritarians who had extensive experience of repressing dissent on their rise to the top." Before the opening of the 14th National Congress of the CPC in 1992, senior party leaders, including Deng and Chen Yun, were to select candidates for the Politburo Standing Committee to ensure a smooth transition of power from the so-called second-generation leaders (Deng, Chen, Li Xiannian, Wang Zhen, etc.) to third-generation leaders (Jiang Zemin, Li Peng, Qiao Shi etc.).