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.
Xuanhan County, which belongs to Dazhou City, Sichuan Province, is located at the southern foot of Dabashan Mountain in the northeast of Sichuan Basin, between longitude 107 °22, longitude 108 °32, longitude 31 °06, latitude 31 °49, Chengkou County, Chongqing in the northeast, Kaizhou District, Chongqing in the east, Kaijiang County in the south, Dachuan District, Tongchuan District and Pingchang County in the west, and Wanyuan County in the north. Located in the joint of Sichuan, Chongqing, Hubei and Shaanxi, it is a satellite city of Dazhou. The county seat is 32 kilometers away from Dazhou City and 42 kilometers from Dazhou Airport. Xiang-Yu Railway, Chongqing-Shaanxi Expressway and Dawan Expressway pass through the border, only 2.5 hours to Chongqing. Xuanhan County covers an area of 4271 square kilometers, 31 towns, 19 townships and 4 ethnic townships. In 2016, the total registered population was 1.3234 million (permanent resident population 1.0315 million).