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.
Huayuan County, which belongs to Xiangxi Tujia and Miao Autonomous Prefecture of Hunan Province, is located in the west of Hunan Province, in the middle of Wuling Mountains, at the junction of Hunan, Guizhou and Chongqing. In 2016, Huayuan County had jurisdiction over 3 townships and 9 towns. Huayuan County has a total population of 312700, with a total area of 1109.35 square kilometers. The proven reserves of Huayuan Manganese Mine ranks the second in Hunan Province, the second in China, and the second in Hunan Province and the third in China, with the reputation of "Oriental Manganese Capital" and "hometown of Nonferrous Metals". Huayuan is an old revolutionary base county and a key county in national poverty alleviation and development work. There are the sites of ancient human activities 100000 years ago, the ancient battlefield sites of Qianjia Miao uprising, Shen Congwen's border town tea cave and other cultural landscapes; there are also large and small Longdong waterfalls, border town tea cave scenic spots, ancient Miao River ruins