Lanzhou, built on the Yellow River, is the geometric center of the world geographic map. The Yellow River runs through the city from east to west, and it is the only provincial capital city where the Yellow River runs through the city. Due to the influence of the terrain between the north and south mountains, the urban area is long and narrow from east to west, about 30 kilometers, and the narrowest point in the north and south is only about 5 kilometers, which has the characteristics of a belt basin city. Lanzhou has a long history. When Qin unified the six countries and established that county, it has a history of more than 2,200 years.

At the beginning of Sui Dynasty, it was renamed Lanzhou. It was formally established on 194 1. Lanzhou has a profound cultural heritage, which is not only one of the important birthplaces of Chinese culture, but also an important meeting place of the Yellow River culture, the Silk Road culture, the Central Plains culture and the western regions culture. Since the Western Han Dynasty, with the opening of the Silk Road, a regional culture with multi-ethnic integration, mutual absorption and pluralism has gradually formed.

Introduction to the historical evolution of Lanzhou;

Lanzhou was founded in 86 BC. According to records, it was named Jincheng because gold was dug up when the city was first built here. There is also a saying that is based on the allusion of "Jincheng Tang Chi", which means it is firm. Jincheng County was established here in Han Dynasty and Wei and Jin Dynasties. When the Sixteen Kingdoms got cold, they moved to Jincheng to rule here. In the third year of Sui Huangkai (AD 583), Emperor Wendi of Sui Dynasty abolished Najizhou and established the Lanzhou General Government. The name "Lanzhou" first appeared in history books.

Later, although Zhou and Na changed their names several times, the organizational evolution of Lanzhou was basically fixed and has been used ever since. 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.

Reference to the above content: Baidu Encyclopedia-Lanzhou City