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.
Jiuzhi County is a county under the jurisdiction of Guoluo Tibetan Autonomous Prefecture in Qinghai Province and one of the animal husbandry production bases in Qinghai Province. It is located in the southeast of the state, at the junction of Qinghai, Sichuan and Gansu provinces, adjacent to Aba County in Sichuan Province in the southeast, Banma County in the south, Dari County in the west, the Yellow River and Gande County in the northwest, and Maqu County in Gansu Province in the northeast. Jiuzhi established the people's Government of Jiuzhi County in March 1955, which has jurisdiction over 5 townships and 1 town. The total area is 8757.25 square kilometers. As of 2012, the total population of Jiuzhi County is 26000, mainly Tibetan, Han, Hui, Mongolian, Tu and other ethnic groups, of which 24000 are Tibetans, accounting for 95.6% of the total population. There are more than 10 Tibetan Buddhist monasteries in Jiuzhi County. In 2013, the GDP of Jiuzhi County was 269 million yuan, an increase over the same period last year.