
A Chinese national flag flies at half-mast to mourn for martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots died of the disease in east China's Shanghai, April 4, 2020. (Photo by Wang Xiang/Xinhua)

A Chinese national flag flies at half-mast to mourn for martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots died of the disease in east China's Shanghai, April 4, 2020. (Photo by Wang Xiang/Xinhua)