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
Orders of precedence in China overall on the leadership protocol hierarchy, immediately after Hu Jintao. At the conclusion of the 18th Party Congress, when Hu Jintao retired as General Secretary, Jiang was ranked 2nd overall, after Xi Jinping, and Hu Jintao was ranked 3rd, after Jiang. Since 2013, judging mostly based on the official obituary notices of various deceased party officials, Jiang and Hu seemed to have progressively moved "lower" on the protocol strata, first below all current members of the Politburo Standing Committee, and as of 2014, behind all members of the sitting Politburo. At major functions, Jiang and Hu sat immediately next to