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.
Hexian County, which belongs to Maanshan City, Anhui Province, is located in the east of Anhui Province, the north bank of the lower reaches of the Yangtze River, between 118 °04 °29 'and 31 °22 °32 °03' north latitude, with a total area of 1319 square kilometers. The topography of Hexian County is long from north to south and narrow from east to west, tilting from northwest to southeast. Hexian belongs to the north subtropical humid monsoon climate zone with four distinct seasons. As of 2018, he County has jurisdiction over 9 towns and 3 functional areas. The county government is stationed in Liyang Town, with a registered population of 542200. Hexian ancient name Liyang, home county has a history of more than 2200 years. 221 BC, home Liyang County, belongs to Jiujiang County. In 555, Nanliang and Beiqi negotiated peace here, and then changed their name to Hezhou. After the Revolution of 1911, it was renamed Hexian. Middle Pleistocene human fossils have been found in Hexian County.