Sichuan Province is located in southwestern China with its capital in Chengdu. Sichuan lies in the Sichuan basin and is surrounded by the Himalayas to the west, Qinling range to the north, and mountainous areas of Yunnan to the south.
It has two Tibetan autonomous prefectures：
Ngawa Tibetan and Qiang Autonomous Prefecture: The prefecture has an area of 84,200 square kilometers and a population of 851,000 with 54.5 percent of them Tibetans.
Garze Tibetan Autonomous Prefecture: The prefecture has an area of 151,078 square kilometers and a population of 914,000 with 78.9 percent of them Tibetans.