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.
Basu County, which belongs to Changdu, Tibet Autonomous region, is located in the east of Tibet Autonomous region and southeast of Changdu. It is located in the upper reaches of the Nujiang River. Baima Town, where the county seat is located, is 3260 meters above sea level. It is bordered by Zuogong County and Chaya County to the east, Chayu County to the south, Luolong County and Linzhi City to the west, Karuo District and similar Wuqi County to the north. The county covers an area of 12564.28 square kilometers (2014). The county is 210km long from north to south and 80km wide from east to west. it has jurisdiction over 4 towns and 10 townships, with a total population of 39021 (2010), including 19790 males and 19231 females, with a total of 6999 households. There are Hengduan Mountains in the southwest of Basu County and Nujiang River in the northeast. The climate type is the plateau temperate zone semi-arid monsoon climate, and the county government is located in the town of Baima from the municipal government of Changdu.