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.
Yumen is a county-level city under the jurisdiction of Jiuquan City, Gansu Province. It is located in the northwest of Gansu Province, west of Hexi Corridor, east of Jiayuguan City and Jinta County, west of Guazhou County, and adjacent to Subei Mongolian Autonomous County in the north and south. The geographical coordinates are between longitude 96 °15 & # 39 × 98 °30 & # 39 39, latitude 39 °40 & # 39 × 41 °00 & # 39; between 114km from east to west and 112.5 km from north to south, with a total area of 13500 square kilometers. By 2019, Yumen had jurisdiction over 2 new and old urban areas, 3 industrial parks, 10 towns and 2 ethnic townships, with a total population of 180000, including 29 ethnic minorities such as Han, Hui, Mongolian, Tibetan and Dongxiang. In 2018, Yumen achieved a GDP of 151.2.