According to the weather query network, Xigaze is located at the northern foot of the Himalayas in southern Tibet, and it is the highest city in China, with an average elevation of 3,836 meters. Shigatse, located at the intersection of Nianchu River and Yarlung Zangbo River in fertile plain, is also the second largest city in Tibet, with an area of 3,875 square kilometers and a population of 920,000. Lhasa is located at the bottom of a small basin surrounded by the Himalayas, with an altitude of about 3658 meters. It is located in the center of the Qinghai-Tibet Plateau. Because it has plenty of sunshine every year, it is also called "Sunshine City". It is the center of political, economic, cultural and religious activities in Tibet.