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.
Tianjun County, which belongs to Haixi Mongolian and Tibetan Autonomous Prefecture of Qinghai Province, is located in the northwest of Qinghai Lake, the eastern edge of Qaidam Basin, Qilian County and Gangcha County of Haibei Tibetan Autonomous Prefecture in the east, Gonghe County of Hainan Tibetan Autonomous Prefecture and Wulan County of Haixi Mongolian Autonomous Prefecture in the south, West Pedelingha City, and the northwest is bounded by Subei Mongolian Autonomous County of Gansu Province. It is the only animal husbandry county in Haixi Prefecture, and coal and animal husbandry are the main industries. The county has a total area of 25700 square kilometers (2010) and has jurisdiction over 3 towns and 7 townships with a total population of more than 47000 (2010). There are Tibetan, Han, Hui, Mongolian, Salar and other ethnic groups. In 2008, Tianjun County achieved a gross domestic product (GDP) of 1.72 billion yuan. On September 29, 2018, the people's Government of Qinghai Province gave a reply and issued a public notice for approval.