Phoenix (/ˈfiːnɪks/ FEE-niks; Navajo: Hoozdo; Spanish: Fénix or Fínix,[citation needed] Walapai: Banyà:nyuwá) is the capital and most populous city of the U.S. state
of Arizona, with 1,608,139 residents as of 2020. It is the fifth-most populous city in the United States, and the only U.S. state capital with a population of more than one million residents.
Phoenix is the anchor of the Phoenix metropolitan area, also known as the Valley of the Sun, which in turn is part of the Salt River Valley. The metropolitan area is the 11th largest by population in the United States, with approximately 4.85 million people as of 2020. Phoenix, the seat of Maricopa County, has the largest area of all cities in Arizona, with an area of 517.9 square miles (1,341 km2), and is also the 11th largest city by area in the United States. It is the largest metropolitan area, both by population and size, of the Arizona Sun Corridor megaregion.
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