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.
Ningshan County, which belongs to Ankang City, Shaanxi Province, is located at the southern foot of the middle part of Qinling Mountains, northwest of Ankang City, Zuoshui County and Zhenan County in the east, Shiquan County, Hanyin County and Hanbin District in the south, Foping County in the west and Changan District, Zhouzhi County and Changyi District in the north. Between latitude 33 °7 "11"-33 °50 "38" north and longitude 108 °2 "33"-108 °56 "48" east, it is more than 130km long from north to south and 110km wide from east to west, with a total area of 3678 square kilometers, making it the largest county in Ankang City. The name of Ningshan comes from the "Ningshan Hall" set up in the Qing Dynasty, which means "peaceful Shaanxi". It belongs to the northern subtropical humid climate, which is the transitional zone between the north and south of China and the watershed of the Yangtze River and Yellow River systems. It is the green barrier of the south pillow in Xi'an, the capital of Shaanxi Province, and the north of Ankang.