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.
Guizhou, referred to as "Guizhou" or "Gui" for short, is a provincial administrative region of the people's Republic of China. Guiyang, the provincial capital, is located in the hinterland of southwest China. It is a transportation hub in southwest China and an important part of the Yangtze River economic belt. China's first national big data comprehensive experimental area, world-famous mountain tourism destinations and major mountain tourism provinces, national ecological civilization experimental area, inland open economic experimental area. It is bounded by 24 °37 degrees north latitude 29 °13 'longitude, 103 °36 degrees east longitude, 109 °35 degrees east longitude, Sichuan and Chongqing to the north, Hunan to the east, Guangxi to the south, and Yunnan to the west. The topography of Guizhou is high in the west and low in the east, tilting from the middle to the north, east and south. The geomorphology of the province can be summarized as follows: the topography is high in the west and low in the east, tilted from the middle to the north, east and south, and the landform is plateau and mountainous area.