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.
Guangzhou, referred to as "Guangzhou", also known as Yangcheng and Huacheng, is the capital, vice-provincial city, national central city and mega city of Guangdong Province. It is an important central city, international trade center and comprehensive transportation hub in China as approved by the State Council. By 2018, there were 11 districts under the jurisdiction of the city, with a total area of 7434 square kilometers, a built area of 1249.11 square kilometers, a resident population of 14.9044 million, an urban population of 12.8744 million, and a urbanization rate of 86.38%. Located in southern China, bordering the South China Sea and the northern edge of the Pearl River Delta, Guangzhou is the headquarters of the theater headquarters in southern China, a national comprehensive gateway city, the first batch of coastal open cities, and the southern gate of China to the world. Guangdong-Hong Kong-Macau Greater Bay Area, the central city and area of the Pan-Pearl River Delta economic zone.