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.
Subei Mongolian Autonomous County, which is under the jurisdiction of Jiuquan City, is located in the northwest of Gansu Province, on the north and south sides of the western end of the Hexi Corridor. The county is divided into two disconnected areas, Nanshan and Beishan, with a total area of 66748 square kilometers. it is bordered by three counties and cities of one country and three provinces (regions). It has jurisdiction over 2 towns and 2 townships, with a total population of 11741 (2012), of which 4446 are Mongolian, accounting for 37.9%. Subei County had nomadic activities in the pre-Qin period; in the Western Han Dynasty, it was incorporated into the territory of the Central Plains Dynasty, belonging to Dunhuang County; after the continuous war, the ownership was changed repeatedly, the local regime and nomadic sphere of influence were crisscross, and the control of the central regime was weak. It belongs to Gansu Province since the Qing Dynasty, and Subei Bureau was set up in the Republic of China in twenty-five years (1937). Liberation in July 1950, 19