Photo taken on Dec. 23, 2019 shows herders of Shuanghu County, Nagchu City, southwest China's Tibet Autonomous Region, on their migration trip. A total of 2,900 residents from three villages of Shuanghu County, have recently left their hometown with an average altitude of 5,000 meters above sea level and travelled nearly 1,000 kilometers to resettle in Konggar County, which, at a relatively low altitude, is located to the south bank of the Yarlung Zangbo River in southern Tibet. (Xinhua/Chogo)