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.
Anning District, Lanzhou District, Gansu Province, is located in the central part of Gansu Province, the western suburbs of Lanzhou City, the north bank of the Yellow River; located in the valley of the Lanzhou section of the Yellow River, the terrain is high in the north and low in the south, the continental climate is remarkable, with four distinct seasons; the total area is 82.33 square kilometers and has jurisdiction over 8 streets; in 2014, the household registration population was 187189. The name of Anning District comes from Anning Castle, a military castle in the Ming Dynasty. it means "peace without trouble and without infringement". It is one of the necessary places of the ancient Silk Road. The forest coverage rate in the area is 43.4%, and the per capita public green space area reaches 12.2 square meters. won the title of "National Greening Model County" The western section of the Yellow River tourism customs line runs through the whole territory of Anning District, where there are Tianaxe Sand Palace, Renshou Hill, Yintan Wetland Park, Lanzhou Botanical Garden, Anning Ecological and Cultural Park, Jiuzhoutai and Wenshu Pavilion.