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.
Pengan County is located in the middle reaches of Jialing River, a famous historical and cultural city at the provincial level, the top ten eco-tourism demonstration cities in China, the top 50 most beautiful small cities in China, and the Qingxi River in Jialing River. it is a very beautiful landscape park city. Nanchong has established an integrated city in the same city. Pengan has a long history, outstanding people, unique location, convenient transportation from Chengdu 230 km, Chongqing 200 km, from the main city of Nanchong and Gaoping Airport only 30 minutes by car, closely integrated into the Chengdu-Chongqing "two-hour economic circle" and Nanchong "half-hour economic circle". Located in the northeast of Sichuan Province, Xiazhong County, Nanchong City, in 507 AD (the sixth year of Tianjian in the Southern Dynasty), Emperor Liang Wu named the county in memory of Sima Xiangru, which was incorporated into Pengzhou in 1371. Pengzhou changed its name to "Pengan" in 1913, with a total population of 730000.