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.
Huinong District, which belongs to Shizuishan City, Ningxia Hui Autonomous region, is located at the northernmost end of Ningxia, bordering the Yellow River in the east, Helan Mountain in the west and Wuhai City in Inner Mongolia in the north. It is the north gate of Ningxia, between longitude 106.70 °- 106.80 °east and latitude 39.20 °- 39.30 °north. As of August 2019, Huinong District has jurisdiction over 3 towns and 3 townships, with a total population of 200000 people and a total area of 1254 square kilometers. Huinong, derived from the name appointed by Emperor Yongzheng for Huinong Canal, contains the meaning of giving benefits to the people. Qin is under the jurisdiction of Beidi County. In April 2004, the Shizuishan District of Shizuishan City and Huinong County were abolished and Huinong District was established. The geomorphology of Huinong District is composed of three units: Helan Mountain hilly land, alluvial inclined plain and Yellow River alluvial plain. Huinong District belongs to the middle temperate zone.