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.
Lianyuan City, which belongs to Loudi City, Hunan Province, is located in the central part of Hunan Province, the northern margin of Hengshao Basin, the upper reaches of Lianshui and Sunshui. Lianyuan City, with a total area of 1830 square kilometers, has jurisdiction over 19 township offices and 1 high-tech zone, with a resident population of 983000 by the end of 2017. Lianyuan is located in the geometric center of Hunan and is an important transportation hub in central Hunan. Lou-Xin Expressway, Changshaolou Expressway, Erguang Expressway and Shanghai-Kunming High-speed Railway run through the whole territory. Lianyuan City is rich in natural resources, known as "sea of coal", "hometown of building materials" and "hometown of non-ferrous metals". It is Hunan energy and raw material base, 100 key coal-producing counties and cities, national well-known coal machinery production base, and national grain-producing counties. In 2018, Lianyuan City achieved a GDP of 29.06 billion yuan.