Farmers sort out just-harvested potatoes in the field at Fengping Township, Dai-Jingpo Autonomous Prefecture of Dehong, southwest China's Yunnan Province, on March 16, 2021. (Xinhua/Wang Guansen)

A farmer displays just-harvested potatoes in the field at Fengping Township, Dai-Jingpo Autonomous Prefecture of Dehong, southwest China's Yunnan Province, on March 16, 2021. (Xinhua/Wang Guansen)

A farmer operates a potato harvester in the field at Fengping Township, Dai-Jingpo Autonomous Prefecture of Dehong, southwest China's Yunnan Province, on March 16, 2021. (Xinhua/Wang Guansen)

Farmers sort out just-harvested potatoes in the field at Fengping Township, Dai-Jingpo Autonomous Prefecture of Dehong, southwest China's Yunnan Province, on March 16, 2021. (Xinhua/Wang Guansen)