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.
Xichong County, which belongs to Nanchong City, Sichuan Province, is located in the north-east of Sichuan Basin, the southwest of Nanchong City, Shunqing District in the east, Jialing District in the south, Yanting County in Mianyang City, Pengxi County and Shehong County in Suining City in the west, and Nanbu County in the north. The total area is 1106.59 square kilometers, and the county seat is 25 kilometers away from Nanchong city in the north. There is Xichong Mountain in ancient times, so it is named Xichong, which is the ecological back garden and satellite city of Nanchong. Belongs to the subtropical humid monsoon climate zone, shallow hilly landform, the average annual temperature is 16.9 ℃, the annual rainfall is 980.8 mm, the average elevation is 361.2 meters, the frost-free period is more than 300 days, the four seasons are distinct, and the climate is mild. As of 2019, Xichong County has jurisdiction over 16 towns, 5 townships and 2 streets. By the end of 2017, the total population of Xichong County was 605900.