Citizens buy food at a supermarket in Qingshanhu District of Nanchang, east China's Jiangxi Province, Jan 30, 2020. Supply of daily necessities remains steady in major Chinese cities while authorities are stepping up efforts to ensure continuous supply and stable prices amid the novel coronavirus outbreak. (HU CHENHUAN / XINHUA)

A vendor arranges vegetables to be sold at a market in Nanning, south China's Guangxi Zhuang Autonomous Region, Jan 30, 2020. (LU BOAN / XINHUA)

A citizen buys vegetables at a market in Nanning, south China's Guangxi Zhuang Autonomous Region, Jan 30, 2020. (LU BOAN / XINHUA)

Citizens buy vegetables at a supermarket in Zhengzhou, central China's Henan Province, Jan 30, 2020. (FENG DAPENG / XINHUA)

Citizens buy fruits at a supermarket in Zhengzhou, central China's Henan Province, Jan 30, 2020. (FENG DAPENG / XINHUA)

Photo taken on Jan 30, 2020 shows vegetables in a cold storage of Hefei, east China's Anhui Province. (ZHOU MU / XINHUA)

A staff member arranges fruits at a supermarket in Qingshanhu District of Nanchang, east China's Jiangxi Province, Jan 30, 2020 (HU CHENHUAN/ XINHUA)

Citizens buy pork at a supermarket in Zhengzhou, central China's Henan Province, Jan 30, 2020. (FENG DAPENG / XINHUA)

Photo taken on Jan 30, 2020 shows vegetables to be sold at a market in Nanning, south China's Guangxi Zhuang Autonomous Region. (LU BOAN / XINHUA)

Sellers sell fresh vegetables at a trading center in Hefei, east China's Anhui Province, Jan 30, 2020. (ZHOU MU / XINHUA)