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.
Huanning County, a subordinate county of Yuxi City, Yunnan Province, is located on the southern edge of the lake basin area of the central Yunnan plateau and belongs to the Zhongshan type landform. It is bordered by Maile County in the east, Jianshui County in the south, Tonghai County and Jiangchuan County in the west, Chengjiang County and Yiliang County in the north. The territory is 34 km wide from east to west, 59 km from north to south, with a total area of 1313 square kilometers, with a mountain area of 89%. It is located between 23 °59'N and 24 °34 °N and 102 °49'E to 103 °09'E. the terrain is high in the northwest, low in the southeast, narrow in east and west, long in the north and south, undulating mountains and mountains, hills, basins and valleys interlaced with "two ridges and two grooves". The larger basins are Ningzhou Dam and Panxi Dam. The main rivers are Nanpan River, Qinglong River, Haikou River, Longdong River and Huaxi River, all of which belong to the Pearl River system.