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.
Hanchuan City, Xiaogan City, Hubei Province, in charge of county-level cities, is located in central Hubei Province, the hinterland of Jianghan Plain, the lower reaches of Hanjiang River, close to Wuhan, the central city of Central China, which is an important part of Wuhan city circle. Wuhan City Circle Expressway (Wuhan sixth Ring Road), Hu-Rong Expressway (G42), Shanghai-Chongqing Expressway (G50), G348 National Highway, Handan Railway and Hanyi High-speed Railway pass through. Hanchuan City has jurisdiction over 2 streets, 14 towns, 6 townships and 4 farming farms, covering an area of 1663 square kilometers, with a population of 1.13 million people, with an urban built-up area of 30 square kilometers and an urban population of 300000. Hanchuan set up the county in the Northern and Southern dynasties, because of the largest tributary of the Yangtze River.