Wichita (/ˈwɪtʃɪtɔː/ WITCH-ih-taw) is the largest city in the U.S. state of Kansas and the county seat of Sedgwick County. As of the 2020 census, the population of the city was 397,532. The Wichita metro area had a population of 647,610 in 2020. It is located in south-central Kansas on the Arkansas River.
Wichita began as a trading post on the Chisholm Trail in the 1860s and was incorporated as a city in 1870. It became a destination for cattle drives traveling north from Texas to Kansas railroads, earning it the nickname "Cowtown". Wyatt Earp served as a police officer in Wichita for around one year before going to Dodge City.
Baiyin District belongs to Baiyin City, Gansu Province. Baiyin gets its name because of the mine and because of the enterprise area. Located in central Gansu, western Baiyin City, the middle upper reaches of the Yellow River, located in the northwest edge of the Longxi Loess Plateau, the general trend of topography is high in the northwest and low in the southeast, with an average elevation of 1946.5 meters. It borders Gaolan County, Lanzhou City in the west, the Yellow River in the south, Qingcheng Town in Yuzhong County and Pingbao Township in Jingyuan County, Liuchuan Township in Jingyuan County in the east, and Zhongquan Township in Jingtai County in the north. With a total area of 1372 square kilometers, it has jurisdiction over 5 streets, 3 towns and 2 townships. In 2017, the registered population of Baiyin District was 290381. In 2017, Baiyin District achieved a GDP of 19.957 billion yuan, an increase of 2.6 percent over the same period last year. In July 2019, it was selected as the pilot county (district) of the national intellectual property strong county project.