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.
Qingan County, which belongs to Suihua City, Heilongjiang Province, is located in the intersection of Songnen Plain and Xiaoxinganling in the middle of Heilongjiang Province. It belongs to the middle and upper reaches of Hulan River Basin. It covers an area of 5469 square kilometers and has jurisdiction over 14 townships and 93 villages with a total population of 412000. Hajia Railway, Hay Highway and Jina Highway pass through the border, 170 kilometers away from Harbin. Qingan County belongs to the low mountain and hilly plain area, which belongs to the cold temperate continental monsoon climate, which is suitable for planting rice, corn, soybean and other crops. Qingan is a national green food A-grade rice production base, which enjoys the reputation of "the hometown of green food in China". On January 25, 2019, he was selected as the national "Ping an Agricultural Machinery" demonstration county in 2018. The quality of farmers' cooperatives across the country will be improved and pilot units will be promoted throughout the county.