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.
Ziyang District, which belongs to Yiyang City, Hunan Province, is located in the north of the central city of Yiyang City, facing Changsha-Zhuzhou-Xiangtan Urban agglomeration to the east and Changde Hanshou County to the west, with a population of 423000 and an area of 680sq km. It has jurisdiction over five towns, one township, two subdistrict offices and one provincial industrial park (Changchun Economic Development District). Ziyang is an important transportation hub and material distribution center in central and northern Hunan, and it is the "key place to undertake the gradient transfer of processing trade" approved by the Ministry of Commerce. The region has formed four major industrial clusters dominated by equipment manufacturing, electronic information, light industrial textiles and agricultural products (food) processing, communications, electric power and other infrastructure have developed rapidly, and land and water transportation has formed a dense network. Ziyang District is a national ecological construction demonstration area, the national Dongting Lake Wetland Ecological Reserve, and it is also one of the two provincial counties with excellent environmental quality in Hunan Province. Guan Yunchang