Tang Yu lived in Jizhou when she was in Xia Yin. The Spring and Autumn Period and the Warring States Period belong to Yan. In the fifth year of Emperor Gaozu (202 BC), Shenhu County (under Bohai County) was established in Mumen. In the third year of the Yuan Dynasty (BC 126), Shenhu County was changed to Shenhu Houguo. The Eastern Han Dynasty merged into Zhangwu County. The Northern Zhou Dynasty belongs to Luchang County. The eastern part of Sui Dynasty belongs to Lucheng County. During the reign of Tang Zhaozong, the Taiwan Army of Lu was established here, and was later changed to Ningjun. In the Five Dynasties, Gan Ningjun entered the Khitan and changed to Ningzhou. In the sixth year of Xiande in the later Zhou Dynasty (AD 959), he took over and restored the Ganning Army, and established Yong 'an County (now Qingzhou) here, which was subordinate to Cangzhou. In the seventh year of Song Taiping's rejuvenating the country (AD 982), Yong 'an County was changed to Ganning County, which was subordinate to Ganning Army. In the second year of Daguan (A.D. 1 108), Gan Ning led his army to Qingzhou, which was close to Gan Ning County. In the first year of Jin Zhenyuan (A.D. 1 153), Ganning was changed to Huichuan County. In the second year of Emperor Taizong of Mongolia (A.D. 1230), the state was changed to the government, which was called Qingning Government. In the seventh year (A.D. 1235), Qingzhou was restored. In the early years of Hongwu in the Ming Dynasty, Huichuan County entered the province for state administration. In the eighth year of Hongwu in the Ming Dynasty (A.D. 1375), it was changed from Qing to Qing, and later called Qing County (there was a river in the south of the city at that time, which was often flooded, so it was changed to Qing, meaning evergreen all the year round), and it belonged to Hejian House. In the middle of Qing Dynasty, it was changed to Tianjin Prefecture. 19 13 Qingxian was changed to Bohai Road in Zhili. 1949 was assigned to Cangxian area. 1952 to Tianjin. 1958 merged into Jinghai county. 196 1 July, Qingxian resumed, belonging to Cangzhou area. 1970 belongs to Cangzhou area. Cangzhou City only belongs to 1986.