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.
Xinghai County is located in the southwest of Hainan Tibetan Autonomous Prefecture of Qinghai Province, and is located in the core area of national nature conservation of "Sanjiangyuan". The county has a total area of 12100 square kilometers, facing Guinan and Tongde across the Yellow River in the east, Gonghe County in the north, Dulan County in Hercynian Mongolian and Tibetan Autonomous Prefecture in the west, and Maduo County and Maqin County in the south. It is 248 kilometers away from Xining, the capital of Hainan Tibetan Autonomous Prefecture, and 103 kilometers away from Qiabu, capital of Hainan Tibetan Autonomous Prefecture. The geographical coordinates are 34 °48 degrees north, 36 degrees 14 degrees north and 99 degrees 01 degrees east, 100 degrees 59 'east. The average elevation of Xinghai County is 3924 meters (Ziketan Town, where the county government is located, is 3303 meters above sea level). Although the highest point of the Ela Mountains is 5305 meters above sea level in Genergang, the lowest point is 2590 meters above sea level at the exit of the Yellow River in Heka Town. Full