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.
Songtao Miao Autonomous County (Songtao for short) is a county under the jurisdiction of Tongren City, Guizhou Province. Founded in 1956, it is one of the earliest autonomous counties approved by the State Council. Located at the eastern foot of Fanjing Mountain, the main peak of the Wuling Mountains, Songtao is located at the junction of Guizhou, Hunan and Chongqing provinces and cities, connected with Huayuan and Phoenix in Hunan, bordered with Youyang and Xiushan in Chongqing, with moderate location and convenient transportation, and is known as the "gateway to eastern Guizhou". In ancient times, there is the name of "connecting Sichuan and Chu, holding down Sanxiang". The county has jurisdiction over 5 streets, 17 towns and 6 townships. The total area is 3409 square kilometers, of which the built area is more than 24 square kilometers. Tongren is the largest county with the largest area, the largest population and the strongest comprehensive strength. In March 2019, it was selected into the list of the first batch of revolutionary cultural relics protection and utilization districts and counties.