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.
Dongxing, a county-level city under the jurisdiction of Guangxi Zhuang Autonomous region, is located in the southwestern border of China and southern Guangxi, bordering the Beibu Gulf in the southeast and Vietnam in the southwest. In 1996, Dongxing became a county-level city. In 2012, the city has jurisdiction over 3 towns, 31 administrative villages and 10 communities, with a land border of 39 km, a coastline of 50 km, an area of 590 square kilometers and a resident population of 157100 (2016). Dongxing has Beilun Estuary Mangrove Reserve, one of the three major mangrove demonstration reserves in the world, and national 4A scenic spots such as Beijing Island Scenic spot and Pingfeng Rainforest Park. there are historical and cultural landscapes such as the No. 1 boundary monument of Daqing, the people's Friendship Park between China and Vietnam, and the former residence of Chen Jitang, the "Southern Heavenly King" of the Republic of China. At the second China Tourism Forum in 2008, Dongxing City was awarded "China"