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.
Liaoyuan City, a prefecture-level city under the jurisdiction of Jilin Province, is located in the central and southern part of Jilin Province, located in the upper reaches of the East Liao River and Huifa River. It is named because the East Liao River originated here, with a geographical outline of "five mountains, one water and four fields". The urban built-up area covers an area of 46 square kilometers. It accounts for 2.8% of the total area of the province. It has jurisdiction over Dongfeng and Dongliao counties, Longshan and Xi'an, with a total population of 1.1724 million. Liaoyuan has a long history and rich cultural heritage. There have been human activities since the Bronze Age, which is one of the important birthplaces of the Manchu. It was designated as the royal "Shengjing paddock" in the Qing Dynasty. After the lifting of the ban in 1902, the county system was established and upgraded to a prefecture-level city in 1983. In 2017, Liaoyuan City achieved a regional GDP of 66.865 billion yuan, with an annual per capita GDP of 55.