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.
Ruoergai County, which belongs to Aba Tibetan and Qiang Autonomous Prefecture, is located on the northeast edge of the Qinghai-Tibet Plateau, located in the north of Sichuan Province, and is the north gate of Sichuan to the northwest province. the geographical coordinates are between 102 °08'E and 103 °39'E and 32 °56'N to 34 °19'N, bordering Maqu County, Luqu County, Zhuoni County, Diebu County and Neiaba County, Hongyuan County, Songpan County and Jiuzhaigou County of Aba Prefecture, respectively. The Yellow River and the Yangtze River divide it into east and west parts. The maximum distance between east and west and north and south is about 150 kilometers. It is 475.3 kilometers away from Lanzhou, 322.4 kilometers away from Markang, the capital of the state, 469.2 kilometers south from Chengdu, and 3406 meters above sea level. Ruoergai County covers an area of 10436.58 square kilometers. At the end of 2010, Ruoergai County