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.
Anding District, which means "peaceful and stable", belongs to Dingxi City, Gansu Province. It is the seat of Dingxi Municipal Party Committee and Municipal Government. It is located in the central part of Gansu Province. It is 82.9km long from north to south and 73.3km wide from east to west, with a total area of 4225 square kilometers. The region has jurisdiction over 12 towns, 7 townships and 3 subdistrict offices, with a resident population of 430500 at the end of 2017. Anding District was built in 1096 AD (the second year of Shaosheng in the Northern Song Dynasty), named "Dingxizhai", and Dingxi County was founded in 1142 (the second year of Jin Huangtong). In September 2003, Dingxi County withdrew its county and set up a district, which was renamed as "Anding District of Dingxi City". Anding District is one of the birthplaces of the Yellow River civilization, the important town of the ancient "Silk Road" and the necessary place for the New Eurasian Continental Bridge. It is known as "Gansu throat and Lanzhou Gateway", which is far away from the provincial capital Lanzhou.