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A farmer turns on the switch to irrigate vegetables at Shapo vegetable base in Haikou, south China's Hainan Province, Feb. 25, 2020. (Xinhua/Pu Xiaoxu)
A farmer turns on the switch to irrigate vegetables at Shapo vegetable base in Haikou, south China's Hainan Province, Feb. 25, 2020. (Xinhua/Pu Xiaoxu)