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.
Xuanhan County, which belongs to Dazhou City, Sichuan Province, is located at the southern foot of Dabashan Mountain in the northeast of Sichuan Basin, between longitude 107 °22, longitude 108 °32, longitude 31 °06, latitude 31 °49, Chengkou County, Chongqing in the northeast, Kaizhou District, Chongqing in the east, Kaijiang County in the south, Dachuan District, Tongchuan District and Pingchang County in the west, and Wanyuan County in the north. Located in the joint of Sichuan, Chongqing, Hubei and Shaanxi, it is a satellite city of Dazhou. The county seat is 32 kilometers away from Dazhou City and 42 kilometers from Dazhou Airport. Xiang-Yu Railway, Chongqing-Shaanxi Expressway and Dawan Expressway pass through the border, only 2.5 hours to Chongqing. Xuanhan County covers an area of 4271 square kilometers, 31 towns, 19 townships and 4 ethnic townships. In 2016, the total registered population was 1.3234 million (permanent resident population 1.0315 million).