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.
Karamay City, one of the four prefecture-level cities in Xinjiang Uygur Autonomous region, is resident in Karamay District. It is an important national petroleum and petrochemical base and a new type of industrialized city built in Xinjiang. Karamay is located in the west of Junggar Basin, the central area of Eurasia and Pan-Central Asia, and is the gathering area of the world's petroleum and petrochemical industry. Karamay, the Uyghur language means "black oil". Karamay is a city named after oil, named after a group of natural asphalt hills in the northeast corner of the city. Karamay is the first large oil field to be explored and developed since the founding of New China. It was founded in 1958. In 2002, its crude oil output exceeded 10 million tons, making it the first large oil field in western China with a crude oil output of more than 10 million tons. Kramer, December 20, 2011