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.
Langao County, which belongs to Ankang City, Shaanxi Province, is located in southern Shaanxi, at the northern foot of Dabashan Mountain, bordering Chengkou County of Chongqing City in the south, Hanbin District of Ankang City in the north, Ziyang County in the west and Pingli County in the east, with a maximum elevation of 2641 meters and a minimum elevation of 331m. It covers an area of 1956 square kilometers, with a total population of 168200 (2017). Langao Nangong rice field was selected as "China's beautiful countryside, 2012 China's best leisure town, one of the most beautiful cities in China." Langao County was founded in the Qing Dynasty, there are Nangongshan, Lanhe rafting and other scenic spots, known as the hometown of Chinese konjac. In 2013, the GDP of Langao County reached 3.1 billion yuan, an increase of 14% over 2012. On February 2, 2019, by the State Administration of traditional Chinese Medicine