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.
Baoding, known in ancient times as Shanggu, Baozhou, Zaocheng and Baofu, is located in the middle of Hebei Province and at the eastern foot of the Taihang Mountains. It is one of the central cities in Beijing-Tianjin-Hebei region and a part of China (Hebei) Free Trade Experimental Zone. It is known as "three passes controlled in the north, nine provinces in the south, and an important place in Gifu." it's called Nanpinghan. Today, the name of Baoding means "defend the capital and stabilize the world". Baoding has always been the "capital capital" and the "south gate of the capital". In the Qing Dynasty, Baoding was the capital of Zhili Province and the resident of the governor of Zhili Province. for nearly 300 years from 1669 to 1968, Baoding was the political, economic, cultural and military center of Hebei and the regional political center of China. After the founding of New China, it has also been the provincial capital of Hebei Province twice. Baoding is also the legendary hometown of Emperor Yao, with a history of more than 3000 years. It is the kingdom of Yan and Zhongshan in history.