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.
Anyuan District, which belongs to Pingxiang City, Jiangxi Province, is the seat of the CPC Pingxiang Municipal Committee and Municipal Government, and the political, economic, commercial, cultural, scientific and educational and transportation center of Pingxiang City. The area is located in the west of Jiangxi Province, central Pingxiang City, adjacent to Hunan, historically known as "Wu Chu throat, Jiangxi-Hunan thoroughfare". The Shanghai-Kunming Railway and the Shanghai-Kunming High-speed Railway run from east to west and are connected with the two major arteries of the Beijing-Guangzhou Railway and the Beijing-Kowloon Railway. 320, 319 National Highway, Shanghai-Rui, Pingli Expressway, double crosses run through the territory. Anyuan District has set up separate counties at the end of the three Kingdoms for more than 1700 years. Anyuan is one of the areas with the rise of industry in modern China. In 24 (1898), Sheng Xuanhuai, the minister of post in the late Qing Dynasty, created a coal mine in Anyuan, which was one of the top ten factories and mines in the Qing Empire at that time. Anyuan became one of the cooperation between China and the West at that time.