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.
Zhenba County, under the jurisdiction of Hanzhong City, Shaanxi Province, is located in the southern tip of Shaanxi Province, the southeast corner of Hanzhong City, the west of Daba Mountain and the eastern part of Micang Mountain. It is known as the "south gate" of Shaanxi Province. As the feudal city of Han General Banchao, the Red fourth Front Army once established the Sichuan-Shaanxi Revolutionary Base and built Shaannan County, covering an area of 3437 square kilometers, with residents of Han, Miao, Hui, Uygur, Zhuang and other ethnic groups. Zhenba County is the largest Miao settlement in the northwest. The county has Baitianhe scenic tourist area, the Miao village unique to the northwest, and the largest Bashan wood and bamboo forest in Asia. In March 2019, it was on the list of the first batch of revolutionary cultural relics protection and utilization districts and counties.