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.
Nanzheng District, which belongs to Hanzhong City, Shaanxi Province, gets its name because of Zheng people's running south. It is located in the southwest border of Shaanxi Province, southwest of Hanzhong Basin, facing Hanjiang River in the north and Yiba Mountain in the south. The area is adjacent to Chenggu County and Xixiang County in Shaanxi Province in the east, Tongjiang County, Nanjiang County and Wangcang County in Sichuan Province in the south, Ningqiang County and Mian County in Shaanxi Province in the west, and Hantai District in Shaanxi Province across the river in the north, covering an area of 2809.0363 square kilometers. The climate in the territory belongs to the north subtropical zone and the warm temperate zone, especially in the north subtropics. Nanzheng is not only an important part of Hanzhong "double hundred" urban planning, but also an economically developed area of Hanzhong City, which has a world-class Tiankeng group. Nanzheng District is also a large area of tourism resources in Shaanxi Province, with scenic spots such as Nanhu Lake, Hongsi Lake,