jiangdaxianIntroduction：Jiangda Introduction: Jiangda County is located in the north of Tibet Autonomous Region, northwest of Changdu City, east of Sichuan Province, Shiqu, Dege and Baiyu counties across the river, north of Yushu City, Yushu Prefecture, Qinghai Province, and Gongju County, west. It is connected to the cardo area of ​​Changdu City, with an average altitude of about 3650m, a minimum altitude of 2800m and a maximum altitude of 5436m. It is 1,170 kilometers from Lhasa and 1,070 kilometers from Chengdu. The county is the largest from 286 kilometers, the largest from north to south is 327 kilometers, 13164.09 square kilometers, and 70,000 people (2003) [1-3]. Jiangda is named after the Pugoukou. The ethnic minority areas with Tibetans as the main body are the junctions of Sichuan, Qinghai and Tibet. They are also the gateway to Tibet. The world-famous National Highway 317 passes through Sichuan-Tibet Highway. Here.