College volunteers join in a desert control activity in Xilingol, north China's Inner Mongolia Autonomous Region, July 19, 2018. (Xinhua/Meng Dingbo)
College volunteers join in a desert control activity in Xilingol, north China's Inner Mongolia Autonomous Region, July 19, 2018. (Xinhua/Meng Dingbo)
College volunteers join in a desert control activity in Xilingol, north China's Inner Mongolia Autonomous Region, July 19, 2018. (Xinhua/Meng Dingbo)
College volunteers join in a desert control activity in Xilingol, north China's Inner Mongolia Autonomous Region, July 19, 2018. (Xinhua/Meng Dingbo)
College volunteers join in a desert control activity in Xilingol, north China's Inner Mongolia Autonomous Region, July 19, 2018. (Xinhua/Meng Dingbo)