The Kansas City metropolitan area is a bi-state metropolitan area anchored by Kansas City, Missouri. Its 14 counties straddle the border between the U.S. states of Missouri (9 counties) and Kansas (5 counties). With 8,472 square miles (21,940 km2) and a population of more than 2.2 million people, it is the second-largest metropolitan area centered in Missouri (after Greater St. Louis) and is the largest metropolitan area in Kansas, though Wichita is the largest metropolitan area centered in Kansas. Alongside Kansas City, Missouri, these are the suburbs with populations above 100,000: Overland Park, Kansas; Kansas City, Kansas; Olathe, Kansas; Independence, Missouri; and Lee's Summit, Missouri.
Anju District, which belongs to Suining City, Sichuan Province, is located in the middle of Sichuan Basin, the middle reaches of Fujiang River and the southwest of Suining City. It is bordered by Chuanshan District of Suining City to the east, Daying County of Suining City to the north, Lezhi County of Ziyang City to the west, Anyue County of Ziyang City of Nanlian City and Tongnan County of Chongqing City to the west, covering a total area of 1258.2 square kilometers. Sui Kai Huang 13 years (593), changed Ruogang County name Anju County, subordinate to Puzhou. On December 18, 2003, Suining City Central District was abolished and Chuanshan District and Anju District of Suining City were established with the original administrative area of Suining City Central District. By the end of 2018, the population of Anju District was 774500. The area is dominated by the Han nationality, and the ethnic minorities are mainly Tibetan, Yi, Miao, Hui, Uygur,