Thus, the era of the "fourth generation" is officially regarded to have begun in 2002, and lasted until 2012, when the next election for the party leadership occurred. The prominent leaders included Hu Jintao (as General Secretary), Wu Bangguo, Wen Jiabao, Jia Qinglin, Zeng Qinghong, Huang Ju, Wu Guanzheng, Li Changchun, Luo Gan, Xi Jinping, Li Keqiang, He Guoqiang, and Zhou Yongkang. It is also known as the "republican generation" or the Hu-Wen Administration. These were promoted to top leadership at the 16th Party Congress and remained in power until the 18th Party Congress in 2012. This generation of leaders, born mainly in the World War II years from 1939 to 1944, represented a new technocratic style governance and a less centralized political structure. The majority of this generation of leaders were engineers whose academic lives were disrupted by the Cultural Revolution and, unlike both their predecessors and likely successors, have spent very little time overseas. The dominant political ideology of this era was Hu's Scientific Development Concept and a goal for a Socialist Harmonious Society.