
Villagers pick stones on the farmland at Nancun Village of Wenbu Township in Nyima County, southwest China's Tibet Autonomous Region, June 26, 2017. The village is located in northern Tibet at an altitude of 4,645 meters. (Xinhua/Purbu Zhaxi)

Villagers pick stones on the farmland at Nancun Village of Wenbu Township in Nyima County, southwest China's Tibet Autonomous Region, June 26, 2017. The village is located in northern Tibet at an altitude of 4,645 meters. (Xinhua/Purbu Zhaxi)