Signs reminding people to keep social distance are seen on the floor at the entrance to the 4th China International Import Expo (CIIE) in east China's Shanghai, Nov. 8, 2021. (Xinhua/Jin Liwang)
COVID-19 control and prevention at 4th CIIE
Source: Xinhua| 2021-11-08 22:08:55|Editor: huaxia
cn
