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.
Tunchang County is located in the north of the central part of Hainan Island, at the northern foot of Wuzhishan and the south bank of Nandu River. It is 85 kilometers north from the center of Haikou, the provincial capital, bordering Ding'an and Qionghai in the east, Qiongzhong in the south and Chengmai in the northwest, which is the throat of Qiongbei platform entering Wuzhishan area. The county seat is located in the center of the county and lies 86 kilometers along the Haiyu middle line. It is a transportation hub between the north and the south and across the east and west of Hainan. There are 8 towns and 6 state-owned farms in the county. Tunchang County as early as more than 100 years ago, Tunchang formed the custom of men and women, old and young practicing martial arts, which continues to this day. In 2015, Tunchang County was named "the hometown of National Wushu" by the Wushu Sports Management Center of the State General Administration of Sports.