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.
Burjin County, which belongs to Altay, is located in the north of Xinjiang Uygur Autonomous region, at the southwest foot of Altai Mountains, along the northern edge of Junggar Basin, bordering Kazakhstan, Russia and Mongolia in the north and northeast. It is one of the two counties bordering Russia in western China (the other is Habahe County). The national boundary is 218 kilometers long and there are many rivers in the country. it is a necessary place for import and export of the two border trade ports in northwest Xinjiang. An ideal port on the border with Russia is of great development value. it is the only nearest channel to open economic and trade exchanges between Northwest China and Russia, and the largest tributary of the Ertix River, the only Arctic water system in China. It is adjacent to Mongolia in the northeast, Altay to the east, Habahe County to the west, Jimunai County and Fuhai County to the south. At the end of 2011, the total population of Burjin County