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.
Diebu County, under the jurisdiction of Gannan Tibetan Autonomous Prefecture, Gansu Province, is located in the alpine canyon between Xiyanmin and Dieshan mountain systems in the Qinling Mountains, at the junction of Ganchuan on the eastern edge of the Qinghai-Tibet Plateau, Zhuoni in the north, Zhouqu in the east, Hadapu in Dangchang in the northeast, and Ruoergai County and Jiuzhaigou County in Sichuan in the southwest. It has a total area of 5108.3 square kilometers and has jurisdiction over 5 towns and 6 townships. In 2017, there were 54000 permanent residents, including Tibetan, Hui, Mongolian and other ethnic minorities. Diebu County was called "Diezhou" in ancient times, which means "thumb" in Tibetan and was called the place where the mountain gods "pressed" it. There are revolutionary sites such as the "Russian Boundary Conference" of the Red Army during the long March, the former residence of Chairman Mao in Zirina, and the Natural Insurance Battle of Lazikou. In addition, there are also Majiayao cultural sites and Tibetan Buddhist monasteries. September 25, 2018