A technician controls a drone to sow seeds at the Kubuqi Desert, north China's Inner Mongolia Autonomous Region, July 24, 2018. Kubuqi, the seventh largest desert in China, is a good example of China's success in alleviating desertification. About 6,460 square kilometers of the Kubuqi desert has been reclaimed in the last 30 years. (Xinhua/Zou Yu)