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.
Yilong County, which belongs to Nanchong City, Sichuan Province, is located in the northeast of Nanchong City, Sichuan Province. Nanchong County, 244 National Highway, 245 National Highway, 205 Provincial Highway, 206 Provincial Highway, 207 Provincial Highway, 304 Provincial Highway, Chengba Expressway and Ba-Guang-Yu Expressway run through or transit through Yilong County. Yilong County has undulating mountains, vertical and horizontal gullies, complex terrain, mild climate, four distinct seasons, sufficient heat, abundant rainfall, rain and heat in the same season, with a total area of 1791 square kilometers, including 29 towns, 7 townships and 1 street. Yilong County is an agricultural county based on planting and breeding industry, and it is the first county in the rabbit industry in the country, a key county in modern animal husbandry in the province, a key county in the construction of high-standard grain fields in the province, a demonstration county in agricultural technology popularization and fertilization in the country, and a demonstration county in soil testing and formula fertilization. It is rich in wheat, rape, rice, red potato, citrus and so on.