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.
Renqiu City is a county-level city under the jurisdiction of Cangzhou City, Hebei Province, located in the middle of Hebei Province, west of Baiyangdian, is the hometown of doctor Bian Que, Huabei Oilfield headquarters is located. The city covers an area of 1012 square kilometers and has jurisdiction over 7 streets, 9 towns, 6 townships, 2 development zones (industrial parks) and 413 administrative villages. The total population is 867148 (2013). Renqiu is located in the north-central part of the North China Plain, mainly growing wheat, corn and other food crops. Rich in underground oil and natural gas resources, it is an important oil producing area and petrochemical base in North China. Renqiu is one of the major cities and cities designated by the State Council to open to the outside world and the economic circle around Beijing and Tianjin. Since the Ninth five-year Plan, Renqiu's comprehensive strength has been in the forefront of the "top 10" counties and cities in Hebei Province, and has been listed among the top 100 counties and cities in the country for many years in a row.