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.
Yanliang District of Xi'an is located in the northeast of the ancient city of Xi'an, 50 kilometers away from the city center, with a total area of 244 square kilometers. It is adjacent to Linwei District of Weinan City in the east, Sanyuan County in Xianyang City in the west, Jingshan Plateau in the north and Fuping County in Weinan City in the north, and Lintong District in Xi'an to the south by Qinghe River, which is located in the center of Weibei area. It has jurisdiction over 7 subdistrict offices, 24 communities and 73 administrative villages. Yanliang District has a resident population of 294700 (2017). Yanliang District has a well-developed aviation industry, which is a famous Chinese aviation city integrating aircraft design, manufacturing, appraisal, flight test, teaching and research. In March 2019, it was on the list of the first batch of revolutionary cultural relics protection and utilization districts and counties.