Introduction to Chengguan: Chengguan District is the only city area in Lhasa. It is in the middle of Lhasa River, a tributary of the Yarlung Zangbo River, with an altitude of 3,650 meters. Lhasa has a total area of ​​nearly 30,000 square kilometers and a city area of ​​523 square kilometers. The city's population is nearly 559,400, of which the population of Chengguan District is 279,000. There are 31 ethnic groups including Tibet, Han and Hui, and the Tibetan population accounts for 87%. It consists of 6 offices, 4 townships, 25 neighborhood committees and 36 village committees. The 3,650-meter river valley alluvial plain in Lhasa is one of the highest cities in the world. The annual sunshine hours are more than 3,000 hours, so there is a reputation for "Sunlight City". The annual precipitation is 200-510 mm. There are also places of interest such as the Potala Palace, the Jokhang Temple, the Jokhang Temple, the Zongjiao Lukang (Longwangtan Park), and the Norbulingka.