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.
Xiaogan got its name from Dong Yong, the filial son of the Eastern Han Dynasty, who buried his father and felt heaven and earth for filial piety. Xiaogan is a regional central city in Hubei Province, an important member of Wuhan urban agglomeration and the urban agglomeration in the middle reaches of the Yangtze River. It is also one of the most potential and competitive cities in central China, and its comprehensive competitiveness ranks among the top six in Hubei Province. Xiaogan is located in the northeast of Hubei Province, north of the Yangtze River and east of the Han River, bordering Wuhan, the capital of Hubei Province, about 60 kilometers away from the center of Wuhan and only 30 kilometers away from Wuhan Tianhe International Airport. Now under the jurisdiction of Xiaonan District, Yunmeng, Dawu,.