• Tulsa
  • Qingyang

Tulsa (/ˈtʌlsə/) is the second-largest city in the state of Oklahoma and 47th-most populous city in the United States. The population was 413,066 as of the 2020 census. It is the principal municipality of the Tulsa Metropolitan Area, a region with 1,023,988 residents. The city serves as the county seat of Tulsa County, the most densely populated county in Oklahoma, with urban development extending into Osage, Rogers, and Wagoner counties.

Tulsa was settled between 1828 and 1836 by the Lochapoka Band of Creek Native American tribe and most of Tulsa is still part of the territory of the Muscogee (Creek) Nation.[a]

Historically, a robust energy sector fueled Tulsa's economy; however, today the city has diversified and leading sectors include finance, aviation, telecommunications and technology. Two institutions of higher education within the city have sports teams at the NCAA Division I level: Oral Roberts University and the University of Tulsa. As well, the University of Oklahoma has a secondary campus at the Tulsa Schusterman Center, and Oklahoma State University has a secondary campus located in downtown Tulsa. For most of the 20th century, the city held the nickname "Oil Capital of the World" and played a major role as one of the most important hubs for the American oil industry.

Qingyang City, Gansu Province is under the jurisdiction of prefecture-level cities, commonly known as "Longdong", is located in the easternmost part of Gansu Province, at the confluence of Shaanxi, Gansu and Ningxia provinces, Yanan City, Shaanxi Province in the east, Jingchuan County in Gansu Province and Changwu, Bin County and Xunyi County in Shaanxi Province in the south, Yulin City in Shaanxi Province and Wuzhong City in Ningxia to the north, and Guyuan City in Ningxia to the west. Qingyang City has a total area of 27119 square kilometers and a population of 2.2666 million (at the end of 2018). It has jurisdiction over one district and seven counties, and the municipal people's government is stationed in Xifeng District. In 2018, the GDP of Qingyang City reached 70.815 billion yuan. Qingyang City is one of the birthplaces of the early agricultural civilization of the Chinese nation, the hometown of "Huanjiang pterosaur" and "Yellow River ancient statue", the land of China's "first Paleolithic", and the birthplace of Chinese traditional medicine culture.
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