• Tulsa
  • Helan County

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.

Helan County (Pinyin: Helan Xian), under the jurisdiction of Yinchuan City, Ningxia Hui Autonomous region, is located in the northern part of Ningxia Hui Autonomous region, bought Lian County in the Western Han Dynasty, and changed its name to Helan County in 1941. As of 2013, Helan County covers an area of 1599 square kilometers. As of 2018, it has jurisdiction over 4 towns, 1 township, 3 fields and 1 management committee. In 2016, the total population of Helan County (resident population) was 255995. Helan County is located in the northwest inland of China's Loess Plateau, in the middle of the Qingtong Gorge irrigation area in Yinchuan Plain, mountainous area in the west and plain in the east. The basic characteristics of the topography trend are high in the southwest and low in the northeast, with a distorted surface tilting from southwest to northeast. The whole area is mainly composed of western mountain and eastern plain.
Travel Guides In Helan County
Travel Notes In Helan County
Yinchuan tour in May 2013
It was almost Mother's Day that year, and I took a day off on Sunday to spend four memorable days with my two mothers. After a woman gets married, she
[Ningxia Travel Guide] Summer vacation is coming, have you thought about where to go? look here......
Take you to explore the Saishang Jiangnan in the desert One mountain, one world, one river and one horizon, the four seasons in Ningxia have beauty be
Warm sun in winter, meeting the rock paintings of Helan Mountain
In winter, people often think of ice and snow, cold wind blowing, but today's Helan Mountain is very quiet and beautiful illuminated by the warm sun i
At the foot of Helan Mountain - Yinchuan World Rock Art Museum, a taste of ancient civilization 2
"Driving a long car to break through the gates of Helan Mountain, eating Hulu meat with aspirations, laughing and talking about drinking the blood of