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.
Dongping County, which belongs to Tai'an City, Shandong Province, is located in the southwest of Shandong Province, facing the Yellow River in the west and Mount Tai in the east, with a total area of 1330.44 square kilometers. In 2018, Dongping County has jurisdiction over 3 streets, 9 towns and 2 townships. By the end of 2017, Dongping County had a resident population of 763300, with a gross domestic product (GDP) of 39.653 billion yuan, of which the added value of the primary industry was 4.458 billion yuan, the secondary industry was 18.219 billion yuan, the tertiary industry was 16.976 billion yuan, and the proportion of the third industry was 11.2%. Dongping County is a "national advanced county for scientific and technological progress". Dongping Lake Scenic spot is rated as a national "4A" scenic spot. In June 2010, "Duan Gu Qiang" in Dongping County was listed as a national intangible cultural heritage.