After Qin Shihuang unified China, the world was divided into 36 counties, and Lanzhou belonged to Longxi County.
At the beginning of the Western Han Dynasty, Lanzhou was still under the jurisdiction of Longxi County. In the second year of Yuanshou (BC 12 1), Huo Qubing led an army to explore the Xiongnu in the west and set up a garrison in the west of Lanzhou, paving the way for Han to open up four counties in Hexi. In the first year of Zhaoyuan (86 BC), Jincheng County was established in Lanzhou today, belonging to Tianshui County.
In the sixth year of Emperor Zhao of the Western Han Dynasty (8 1 year BC), Jincheng County was also established. In the second year of Xuan Di Shenjue, after Zhao Chongguo pacified Xiqiang and stationed troops in Huangzhong, he strengthened the rule of the Western Han Dynasty in Jincheng County and established seven new counties successively. In the 12th year of Jianwu in the Eastern Han Dynasty (AD 36), Jincheng County was merged into Longxi County. In the fourth year of Andiyong (A.D. 1 10), Xiqiang Uprising, most of Jincheng County was occupied, and the county moved from Wuyun to Wu Xiang (now Longxi County, Gansu Province), and moved back to Wu Yun 12 years later. At the end of the Eastern Han Dynasty, a new Jincheng County was established in Xiping County. Since then, Jincheng County has moved from Wuyun to Yuzhong (now the west of Yuzhong County).
After the establishment of the Western Jin Dynasty, it was still located in Jincheng County. At the end of the Western Jin Dynasty, in the first year of Yong 'an (AD 3 14), Liang Qian was divided into two counties, namely Zhiyang and Lingju, which belonged to Jincheng County and juxtaposed with the newly established Yongdeng County (near Yaojie, Honggu District, Lanzhou City). In the same year, Jincheng County moved from Yuzhong to Jincheng, and Jincheng County and County were in the same city from then on.
In the third year of Emperor Wendi (AD 583), Jincheng County was changed to Lanzhou and the Governor's Office was established. Lanzhou is named after Gaolan Mountain in the south of the city. In the third year of Daye (AD 607), Zicheng County was changed to Jincheng County, Lanzhou was changed to Jincheng County, Jincheng County and Didao County were the leaders, and Jincheng was the county. In the 13th year of Daye (AD 6 17), Xue Ju, a captain of Jincheng, rebelled against Sui Dynasty, claiming to be the overlord of the Western Qin Dynasty and establishing Jincheng as its capital. Soon moved the capital to Tianshui, which was destroyed by the Tang Dynasty.
Fuhua, Tang Wude two years (AD 6 19), he returned to Lanzhou. In eight years, he set up the governor's office. In the first year of Qing Dynasty (AD 656), it was changed to Zhou. In the first year of Tianbao (AD 742), it was changed to Jincheng County. In the second year of Gan Yuan (AD 759), Jincheng County was changed to Lanzhou, and the state ruled Wuquan, which governed Wuquan and Guangwu counties.
In the first year of Baoying (762), Lanzhou was occupied by Tufan. In the second year of Dazhong (AD 848), Zhang Yichao, a native of Hezhou, revolted, recovered eleven states in Longyou, and Lanzhou returned to Tang Dynasty. However, at this time, the Tang Dynasty had declined and could not keep up with the West. It was quickly occupied by the Tangut.
In the early Qing dynasty, it stood in accordance with the Ming dynasty. Lanzhou belongs to Lintao Prefecture and Wei belongs to Shaanxi Province. In the 13th year of Shunzhi (AD 1656), Wei Jian returned to Dengzhou. In the second year of Kangxi (AD 1663), Lanzhou Wei was rebuilt. In the fifth year of Kangxi (AD 1666), Shaanxi and Gansu were separated and Gansu was established as a province. The capital moved from Changgong (now Longxi) to Lanzhou. Since then, Lanzhou has been the political center of Gansu. In the third year of Qianlong (AD 1738), Lintao House was moved from Didao to Lanzhou, renamed Lanzhou House and changed to Gaolan County. At that time, Lanzhou government was in charge of drip irrigation and Hezhou. Gaolan, Jinxian, Weiyuan and Jingyuan counties. In the 29th year of Qianlong (AD 1764), the Shaanxi-Gansu Governor's Office was moved from xi 'an to Lanzhou, and the number of governors in Gansu decreased.
After the Revolution of 1911, in the second year of the Republic of China (AD 19 13), the abandoned government (state) built roads, and Lanshan and Changgong were Lanshan Road, which governed Gaolan, Hongshui, Yuzhong, Didao, Daohe, Ding Ning, Tao Sha, Jingyuan, Weiyuan, Dingxi and Lintan. Daoyin is stationed in Gaolan County, the provincial capital. In the Republic of China 16 (A.D. 1927), it was changed to District, and Lanshan Road was changed to lanshan district. In the 25th year of the Republic of China (A.D. 1936), Gansu Province was designated as the seven major administrative supervision departments, and Gaolan and Yuzhong were the first administrative supervision areas (Min County was specially set up). In the 30th year of the Republic of China, that is, 194 1 July, the suburb of Gaolan county was demarcated, and Lanzhou city was newly established, which jointly ruled the chengguan district of Lanzhou with Gaolan county. Urban area 16 km2, population172,000. In 33 years of the Republic of China (A.D. 1944), the urban area expanded, covering an area of 146 square kilometers, with Yangwa Mountain in the east, Tumendun (excluding Matan) in the west, Shizuizi, Baliyao and Gaolan Peak in the south and Yanchangbao and Shilidian in the north.
1August 26th, 949, Lanzhou was liberated. Since then, Lanzhou has entered a new historical period. Since the founding of the People's Republic of China, the construction of Lanzhou has undergone several changes. Lanzhou now governs five districts, namely Chengguan, Qilihe, Anning, Xigu and Honggu, and three counties, namely Yuzhong, Gaolan and Yongdeng.