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.
Wenchang, known as Zibei in ancient times, has a history of more than 2100 years since the Western Han Dynasty. It is one of the three historical ancient cities in Hainan. It is a famous hometown of overseas Chinese in China and one of the important base areas of the Qiongya Revolution. The birthplace of Minnan culture in Hainan, the location of Hainan Wenchang Space launch Center, is the fourth space city in China. It is located in the integrated economic circle of "one hour Economic Circle" and "Haicheng text" in Qiongbei Comprehensive Economic Zone. Qiongbei is one of the important regional centers of economy, culture, transportation, science and technology and tourism. Wenchang, Haikou and Sanya have been selected as "charming cities with Chinese characteristics" by global organizations. they are national demonstration cities for scientific and technological progress, national advanced cities for scientific and technological progress, and advanced cities for national culture. The city with 278.5 kilometers of coastline is the longest in Hainan, and Qinglan Port in the city is open to the outside world at the national level.