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.
Derong County, which belongs to Ganzi Prefecture, Sichuan Province, is located in 99 °07 east longitude and 29 °10 'north latitude. Located in the southwest of Sichuan Province, it is located in the middle of the Great Shangri-La Tourism Ring at the junction of Sichuan, Yunnan and Tibet. Derong County belongs to the dry valley of the Jinsha River, which is connected with Batang and Xiangcheng County of Ganzi Prefecture in the north, Shangri-La County of Diqing Prefecture of Yunnan Province in the southeast and Deqin County of Diqing Prefecture of Yunnan Province in the southwest. It is 670km away from the state capital Kangding, 1040 km away from Chengdu (Kangding direction), and about 1477 km from Yunnan to Chengdu. In 2017, Derong County has an area of 2916 square kilometers and has jurisdiction over 3 towns and 9 townships, including 127villages, 3 communities and 251natural villages. By the end of 2017, Derong County has a total population of 25859.