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.
Gulang County, which belongs to Wuwei City, Gansu Province, is located in the central part of Gansu Province, the eastern end of Hexi Corridor, the northern foot of Wushaoling and the southern edge of Tengger Desert. The geographical coordinates are 37 °09 north latitude 37 °54 mi, east longitude 102 °38 mi 103 °54'. It is bordered by Jingtai County in the east, Tianzhu Tibetan Autonomous County in the south, Liangzhou District in the northwest and Alashan left Banner in Inner Mongolia Autonomous region in the northeast. The county is about 102km long from east to west and 88km wide from north to south, with a total area of 5103 square kilometers. As of 2011, Gulang County has jurisdiction over 9 towns, 10 townships, 1 street, 250 villages and 1934 village groups, with a total population of 388943. There are ten ethnic groups, including Han, Hui, Tibetan, Mongolian, Miao, Manchu, Dongxiang, Tu, Maonan and Yao.