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.
Baiyin District belongs to Baiyin City, Gansu Province. Baiyin gets its name because of the mine and because of the enterprise area. Located in central Gansu, western Baiyin City, the middle upper reaches of the Yellow River, located in the northwest edge of the Longxi Loess Plateau, the general trend of topography is high in the northwest and low in the southeast, with an average elevation of 1946.5 meters. It borders Gaolan County, Lanzhou City in the west, the Yellow River in the south, Qingcheng Town in Yuzhong County and Pingbao Township in Jingyuan County, Liuchuan Township in Jingyuan County in the east, and Zhongquan Township in Jingtai County in the north. With a total area of 1372 square kilometers, it has jurisdiction over 5 streets, 3 towns and 2 townships. In 2017, the registered population of Baiyin District was 290381. In 2017, Baiyin District achieved a GDP of 19.957 billion yuan, an increase of 2.6 percent over the same period last year. In July 2019, it was selected as the pilot county (district) of the national intellectual property strong county project.