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.
Huaiji County, which belongs to Zhaoqing City, Guangdong Province, is located in the northwest of Guangdong Province, the north of Zhaoqing City and the upper reaches of Suijiang River, a tributary of Beijiang River. It is located in the uplift belt of western Guangdong, with basin areas in the west, low hills and high hills in the middle and south, with a subtropical climate, long summer and short winter, abundant rainfall, and an annual average temperature of 21.1℃. With a total area of 3554.07 square kilometers, it is the largest county in Zhaoqing County. As of 2017, Huaiji County has jurisdiction over 18 towns and one nationality township, with a registered population of 1.1 million and a resident population of 848400. Huaiji County was established in Yintun Township, Sihui County, Nanhai County in the 13th year of Song Yuanjia of the Southern Dynasty (436 years). The Song Dynasty formed the basic realm of today's Huaiji County. The Yuan Dynasty was transferred to Hezhou, Huguangzhong Book Co., Ltd. The Ming Dynasty was transferred to Wuzhou Prefecture in Guangxi. It was assigned to Guangdong Province in March 1952 and Zhao in 1988.