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.
Longzi County, which belongs to Shannan City, Tibet Autonomous region, is located in the south of Shannan City, in the eastern part of the northern foot of the Himalayas, bordering Lang County and Jiacha County in the north, Menjiu County in the south, Luoyu County in the east and Cuomei County in the west, Cuona County in the southwest, Qusong County in the north, Nedong District in Shannan City in the northwest, and Milin County in the northeast. Its geographical location is 91 °53km east longitude, 93 °06km east longitude and 28 °07mm north latitude, with a total area of 10566 square kilometers and an actual control area of 8165 square kilometers. As of 2018, Longzi County has jurisdiction over 2 towns and 9 townships. By the end of 2017, the total population of Longzi County was 35858, with a regional gross domestic product (GDP) of 1.099 billion yuan, of which the added value of the primary industry was 64.185 million yuan and the second production was the second.