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.
Kaiyuan City, located in the southeast of Yunnan Province, belongs to Honghe Hani and Yi Autonomous Prefecture. Yanshan in the east, Qiu Bei in the south, Mengzi and Gejiu in the south, Jianshui in the west and Maitreya in the north are the traffic fortresses and central cities in southeastern Yunnan. The total area is 1946.91 square kilometers and the population is 334100 (2016). Kaiyuan is rich in coal resources. Xiaolongtan, 20 kilometers away from the city, has lignite reserves of 1.2 billion tons, which is the largest open-pit coal mine in Yunnan, with an annual mining capacity of 6.3 million tons. There is a 600000 kilowatt Kengkou power plant. Cement, chemical fertilizer, sugar, papermaking, wine, food and other industries are beginning to take shape. In 2011, Kaiyuan realized 4.03 billion yuan in industrial added value and 1.19 billion yuan in profits and taxes. In March 2015, Kaiyuan was officially named by the National Association of Love and Health.