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.
Pingxiang City, a county-level city in Guangxi Zhuang Autonomous region, is hosted by Chongzuo City, located in southern China, bordering Lang Shan in Vietnam, known as "the south gate of the motherland", and is the international city closest to ASEAN countries in China. It has four towns under its jurisdiction, with a land area of 650 square kilometers and a population of more than 100,000. Pingxiang City is 160 kilometers away from Nanning, the capital of Guangxi, and Hanoi, the capital of Vietnam (expressway), and borders with Vietnam's Liangshan Province on both sides of the southwest. The border line is 97 kilometers long. In the border area, there are two national first-class ports (highway) and Pingxiang port (railway), one second-class port and five border cities. It is the border port city with the largest number, the most variety and the largest scale of Guangxi ports. It is the largest and most convenient land passage from China to Vietnam and Southeast Asia. 1992 6