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.
HuaYing, abbreviated for short, is directly under the jurisdiction of Sichuan Province and hosted by Guang'an City. It is one of the two sub-cities of Guang'an "Shuangbai" Group City Plan. It is located in the eastern part of Sichuan Basin, the western foot of the middle section of Huaying Mountain, and is the eastern gate of Sichuan Province. It is 126 kilometers away from Chongqing and 300 kilometers away from Chengdu, which is named after Huaying Mountain. Huaying is a heroic city and a red city. It is an excellent tourist city in China, one of the key counties and cities in Huanyu area of Sichuan Province, a garden city of Sichuan Province, and also one of the birthplaces of Hongyan spirit. Huadu, which was listed as the first batch of pilot counties and cities to expand power in Sichuan Province in 2007, was listed as the second batch of resource-based cities in Sichuan Province in 2009 and the only resource-based city in Sichuan Province to transform into pilot cities. In 2010, it was awarded the title of Old Revolutionary Base in Sichuan Province, and in 2012 it was listed.