
A farmer works in a field as Chinese wolfberry enters the harvest season at Saishike Village of Wulan County in the Mongolian-Tibetan Autonomous Prefecture of Haixi, northwest China's Qinghai Province, Aug. 11, 2017. (Xinhua/Wang Bo)

A farmer works in a field as Chinese wolfberry enters the harvest season at Saishike Village of Wulan County in the Mongolian-Tibetan Autonomous Prefecture of Haixi, northwest China's Qinghai Province, Aug. 11, 2017. (Xinhua/Wang Bo)