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.
Hualong Hui Autonomous County is located in the transitional zone between the Loess Plateau and the Qinghai-Tibet Plateau in the east of Qinghai Province and in the south of Haidong City. Is a Hui-based multi-ethnic county, a total of Hui, Han, Tibetan, Salar and other 12 ethnic groups. The county people's government is stationed in Bayan Town, 75 kilometers away from the provincial government. Linping Highway, Lehua Highway, Asai Highway, Zaha Highway, Ping-An Expressway and Yanguan Highway run through the county. Hualong Hui Autonomous County has a total area of 2740 square kilometers and has jurisdiction over 3 towns and 18 townships. As of 2010, the total population is 229669. Located in the mountains and valleys on the north side of the Yellow River valley, the terrain tilts from northwest to southeast, and the Yellow River flows through the southwest and south of the county. It belongs to the eastern arid area of the Qinghai-Tibet Plateau, with an average annual temperature of 2.2 ℃ and annual precipitation of 470mm.