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.
Dari County, under the jurisdiction of Guoluo Prefecture, Qinghai Province, is located in the southeast of Qinghai Province and in the south of Guoluo Tibetan Autonomous Prefecture at the junction of Sichuan, Gansu and Qinghai provinces. It is bordered by Jiuzhi County in the east, Banma County in the southeast, Seda County in Sichuan Province in the south, Shiqu County in Sichuan Province in the southwest, Maduo County in the northwest, and Maqin and Gande counties in the north across the Yellow River. The county has a total area of 16466 square kilometers and has jurisdiction over 9 townships, 1 town, 33 animal husbandry committees, 109 animal husbandry cooperatives and 1 poverty alleviation association, with a total population of more than 30, 000 people (2013). Dari County, with an average elevation of more than 4200 meters above sea level, belongs to an alpine and semi-humid climate, and is one of the natural ecological protection and management areas of the "three Rivers Source". At the same time, it is also an important commodity in Guoluo Prefecture, second only to the location of the prefecture (Dawu), the distribution center of Chinese and Tibetan medicinal materials and Qingchuan Jiao.