Colorado Springs is a home rule municipality in, and the county seat of, El Paso County, Colorado, United States. It is the largest city in El Paso County, with a population of 478,961 at the 2020 United States Census, a 15.02% increase since 2010. Colorado Springs is the second-most populous city and the most extensive city in the state of Colorado, and the 40th-most populous city in the United States. It is the principal city of the Colorado Springs metropolitan area and the second-most prominent city of the Front Range Urban Corridor. It is located in east-central Colorado, on Fountain Creek, 70 miles (113 km) south of Denver.
Baiyin, prefecture-level city of Gansu Province. Located in the middle of Gansu Province, located in the transitional zone between the Loess Plateau and Tengger Desert, most of the territory is mountainous, mountainous and wide valley plain coexist; it is the transition zone from mid-temperate semi-arid zone to arid zone. The city has a total area of 21158.7 square kilometers and has jurisdiction over 2 districts and 3 counties. By the end of 2018, Baiyin had a resident population of 1.7342 million, an increase of 4900 over the end of last year. Baiyin City is located in the upper reaches of the Yellow River and the middle of Gansu Province, located in the confluence zone of the ancient Silk Road and the Yellow River, connecting the desert to the north, Qinghai and Tibet to the south, the Central Plains to the east and the western region to the west, 69 kilometers away from the provincial capital Lanzhou and 46 kilometers away from Zhongchuan Airport. It is a strategic channel connecting the subcontinental bridge, a transportation corridor and an energy logistics channel to countries along the Silk Road. The territory of Baiyin