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.
Jinzhai County, which belongs to Lu'an City, Anhui Province, is located in the border area of western Anhui and the hinterland of the Dabie Mountains. It is located in the junction of three provinces, seven counties and two districts. The west and south are adjacent to Henan and Hubei provinces, with a total area of 3814 square kilometers. Jinzhai County is the largest mountain county with the largest population and tourism resources in Anhui Province, and it is also the second largest general county in China. Jinzhai County is known as "the cradle of the Red Army and the hometown of generals" and is an old revolutionary base. Provincial highways 209 and 210 run from north to south and are close to National Highway 312. Meishan Reservoir and Xianghongdian Reservoir are navigable all the year round. In 2018, Jinzhai County has jurisdiction over 12 towns and 11 townships, and has another development zone with a registered population of 683500, with a regional gross domestic product (GDP) of 11.39372 billion yuan, of which the added value of the primary industry is 18.89.