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.
Maqu County, which belongs to Gannan Tibetan Autonomous Prefecture of Gansu Province, is located in the southwest of Gannan Tibetan Autonomous Prefecture of Gansu Province, the eastern end of the Qinghai-Tibet Plateau, the junction of Gansu, Qinghai and Sichuan provinces, and the first curved part of the Yellow River. It is located between longitude 100 °4545 "~ 102 °2900" east and latitude 33 °0630" ~ 34 °3015 "north, bordering Luqu County of Benzhou by Xidianshan in the northeast and Ruoergai County and Aba County of Aba Tibetan and Qiang Autonomous Prefecture in Sichuan Province in the southeast. Maqu County has a total area of 10190 square kilometers and a total population of 54900 (2011), of which Tibetans account for 2/3, with an average elevation of 3700 meters. Maqu belongs to the Qiang nationality in ancient times. After Tubo unified the Qinghai-Tibet Plateau in 663 AD, it became a nomadic place for Tibetans. In 2011, Maqu