Qinghai belongs to Qinghai Province, referred to as "Qing" for short. It is the provincial administrative region of China people and the capital of Xining. It is located in the northwest inland of China, bordering Gansu Province in the north and east, Xinjiang Uygur Autonomous Region in the northwest, Xizang Autonomous Region in the south and southwest, and Sichuan Province in the southeast. The terrain is generally high in the west and low in the east, high in the north and south and low in the middle. It is located in the Qinghai-Tibet region and has four geographical divisions; With a total area of 722,300 square kilometers, it governs 2 prefecture-level cities and 6 autonomous prefectures; By the end of 2023, the resident population of the province was 5.94 million. Qinghai Province is located in the west of China and the northeast of Qinghai-Tibet Plateau, the roof of the world. It is named after Qinghai Lake, the largest inland saltwater lake in China. Qinghai Province is the birthplace of the Yangtze River, the Yellow River and the Lancang River, so it is called the "source of rivers", also known as the "source of three rivers" and the "water tower of China", which is the link between Xizang Autonomous Region, Xinjiang Uygur Autonomous Region and the mainland.