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.
Lufeng County is formed by the merger of Lufeng County (Jinshan Town), Luozi County (Bicheng Town), Guangtong County (Guangtong Town) and Yanxing County (Heijing Town). It is now under the jurisdiction of Chuxiong Yi Autonomous Prefecture in Yunnan Province. The county is located in the middle of Yunnan Province, adjacent to Anning City, Kunming City. Due to the discovery of the world's largest dinosaur fossils and Ramalopithecus fossils, Lufeng has been praised as "the hometown of dinosaurs", "fossil warehouse", "birthplace of Asian humans" and "natural museum" in academic circles. As of 2013, Lufeng County has a total area of 3536 square kilometers, a GDP of 12.8 billion yuan and a total population of 427000. Lufeng County has "World Dinosaur Valley", Heijing ancient town, Wutai Mountain and other tourist attractions.