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.
Banma County is located in the southeast of the state border, bordering Sichuan Province in the east and south. The county government is located in Moba Township, 315 kilometers away from the state capital. The population is 27000 (2007), mainly Tibetans, accounting for more than 95% of the total population, as well as Han, Hui, Turkish and other ethnic groups. It covers an area of 6376 square kilometers and has jurisdiction over 8 townships and 1 town. The annual average temperature in Banma County is-1.0-2.8 ℃. With the increase of altitude, the temperature decreases gradually. In terms of the annual change of air temperature in Banma County, the monthly average temperature is the highest in July, and the monthly average temperature is 11 ℃. In January, the monthly average temperature is-9.8 ℃, but it is characterized by rapid warming and rapid cooling, and the cooling range is greater than the warming range. Banma County has a total land area of 6138 square kilometers, accounting for 8.03% of the total area of the state. The grassland area is 396700 hectares.