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.
Guazhou County, which belongs to Jiuquan City, Gansu Province, is located at the western end of the Hexi Corridor in Gansu Province, Yumen City, the oil city in the east, Dunhuang City in the west, the Mongolian Autonomous County in Subei in the north and south, and Hami in the northwest. Since ancient times, it has been the transportation hub of east to west and the merchant town of the ancient Silk Road. Guazhou County is 185km long from east to west and 220km wide from north to south, covering an area of 24100 square kilometers. Guazhou County has jurisdiction over 5 towns, 10 townships and 73 administrative villages. at the end of 2011, Guazhou County had a resident population of 149500, including 21 ethnic groups such as Han, Hui, Mongolian and Tibetan, and a minority population of 25000 (2011). Guazhou County has 4 national cultural relics protection units and 16 provincial cultural relics protection units. In 2011, the GDP of Guazhou County reached (G