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.
Tongzi County is under the jurisdiction of Zunyi City, Guizhou Province. It is located in the north of Guizhou Province, bordering Chongqing in the north, Huichuan District and Renhuai City in the south, Xishui County and Qijiang District in Chongqing in the west, and Nanchuan District and Wansheng District in the north. The ground spans 27 °57 °N 28 °54 °N, 106 °26 °E and 107 °17 °E, with a total land area of 3202 square kilometers. Tongzi County has jurisdiction over 2 streets, 20 towns, 2 townships and 1 ethnic township. At the end of 2017, the registered population of Tongzi County was 742300. Tongzi County is "the hometown of bamboo shoots in China", known as "the gateway to northern Guizhou" and "the key to Sichuan and Guizhou". Sichuan-Guizhou Railway, National Highway 210 and Yu-Zhan Expressway run through the county, and the driving time from the county seat to Guiyang and Chongqing is about 2 hours. In September 2018, Tongzi County withdrew from the poverty-stricken county.