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.
Lintao County, known as Didao in ancient times, belongs to Dingxi City, Gansu Province, and gets its name because of the Tao River in the territory. Lintao County is located in the middle of Gansu Province and the west of Dingxi City. It is located in the confluence zone of the Loess Plateau and the Qinghai-Tibet Plateau. Tao River, the largest tributary in the upper reaches of the Yellow River, passes through the city. As of October 2018, the county has a total area of 2851 square kilometers and a total population of 552900. There are 21 ethnic groups, including Han, Hui and Dongxiang, under the jurisdiction of 12 towns and 6 townships, with the county government stationed in Taoyang Town. Lintao has been a famous city in the northwest and an important town in Longyou since ancient times. it is located on the main road of the ancient Silk Road and is one of the important birthplaces of the ancient culture of the Yellow River. Since the establishment of Didao County in the 18th year of King Zhou'an (384 BC) and the establishment of Longxi County in the 27th year of King Zhao of Qin Dynasty (280 BC), it has been a county, state, state, government and county government.