Jingzhou, after the waste; in this county to buy the original Qiu County (later renamed Yu County), and Shiai County belong to Liaozhou. In the early Tang Dynasty, the city belonged to the state, and later abandoned by the state. Shiai and Yuxian successively belonged to both prefectures and Taiyuan prefectures. In the first year of Tianbao (742), Shiai changed its name to Guangyang and moved to Guangyang Village. The five dynasties belong to the late Tang Dynasty, the Post-Jin Dynasty, the Post-Han Dynasty and the Northern Han Dynasty. In the Northern Song Dynasty, Taiping Xingguo four years (979), changed Guangyang County to Pingding County, the county administration moved back to Pingding Shangcheng, Li Ping Dingjun; Yu County belongs to the state; after that, Pingding County and Yu County both belong to Hedong Road. Jin Shengping Dingzhou, Yuzhou, is Hedong Road, he Northeast Road. Yuan belongs to Jining Road. In the Ming Dynasty, Yuzhou was reduced to a county, and Pingding Prefecture belonged to Taiyuan House in Shanxi Province. Qing Yongzheng two years (1724), pacified as Zhili Prefecture, the addition of Yu County, Shouyang County, is Shanxi Province. At the beginning of the Republic of China, it was Pingding County and Yu County, which belonged to Jining Road in Shanxi Province and was directly under the jurisdiction of Shanxi Province. During the War of Resistance against Japan, Ping (Lubei) County, Ping (Ding) East County and Ping (Ding) West County, Yu County divided into Pen (County) Ping (Shan) County, Pen (County) Yang (qu) County, Pen (County) Shou (Yang) County; To the south of Zhengtai Railway, Ping (Ding) East and Ping (Ding) West two counties belong to the Shanxi-Hebei-Shandong-Henan Border region, and the northern counties belong to the Shanxi-Cr-Hebei Border region. During the War of Liberation, peace, Yu County gradually restored to the original establishment. On May 4, 1947, Yangquan City was established as part of the original Pingding County, which was later renamed Yangquan Industrial and Mining area. Yangquan City (industrial and mining area) has been under the jurisdiction of the North China Joint Administrative Commission, the North China people's Government and Shanxi Province. After the founding of New China, Yangquan City (initially industrial and mining area, resumed in 1952) several times by Jinzhong (Yuci) area (special agency), Pingding County, Yu County is Jinzhong (Yuci) area (special agency). It has set up urban areas, suburbs and mining areas. In September 1983,