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.
Zhangye, named after "Zhang Guojie, through the Western regions", is a prefecture-level city in Gansu Province. It is located in the middle of Hexi Corridor in the northwest of Gansu Province. In ancient times, it was called "Ganzhou", that is, the origin of the word "Gan" in Gansu Province. it is known as "the land of mulberry and hemp" and the laudatory name of the land of fish and rice. Rich in wheat, corn, rice, beans, oil, melons and fruits, vegetables, industry has coal, machinery, textile, brewing and other 10 departments. Native products are spring onions, apple pears, Wujiang rice, red dates, Nostoc flagelliforme, silk road spring wine and so on. Zhangye City covers an area of 40874 square kilometers and has a population of 1.31 million. It has jurisdiction over six counties and districts: Ganzhou District, Linze County, Gaotai County, Shandan County, Minle County and Sunan Yugur Autonomous County. By the end of 2017, the resident population was 1.2293 million. There are 38 ethnic groups, including Han, Hui, Tibetan and Yugu.