Staff members of a supermarket arrange meat for sale in a supermarket in Xining, northwest China's Qinghai Province, Jan. 31, 2020. (Photo: Xinhua)

A citizen buys flour in a supermarket in Xining, northwest China's Qinghai Province, Jan. 31, 2020. (Photo: Xinhua)

A vendor arranges vegetables at a market in Haikou, south China's Hainan Province, Jan. 31, 2020. (Photo: Xinhua)

Residents buy meat at a market in Haikou, south China's Hainan Province, Jan. 31, 2020. (Photo: Xinhua)