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.
Zigong, a prefecture-level city of Sichuan Province, is located in the south of Sichuan Basin; Longchang City and Lu County to the east, Luzhou City and Yibin City to the south, Jianwei County and Jingyan County to the west, Renshou County, Weiyuan County and Neijiang City to the north; geotectonic system Yangzihuai Sichuan Taiao, Chuanzhong Taigong and Zigong sag; it belongs to subtropical humid monsoon climate; in 2017, the city covers an area of 4381 square kilometers and has jurisdiction over 4 districts and 2 counties. The registered population is 3.2394 million. Zigong "set up a city due to salt", and the words "Zi and Gong" are derived from the names of "Ziliujing" and "Gongjing". At the same time, Zigong is also an important producing area of dinosaur fossils in China, known as the "hometown of dinosaurs". It is famous at home and abroad for the Zigong Dinosaur Museum, which is one of the three dinosaur museums in the world. Zigong gourmet salt is