
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 who died of the disease in Shanghai, east China, April 4, 2020. (Xinhua/Ren Long)

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 who died of the disease in Shanghai, east China, April 4, 2020. (Xinhua/Ren Long)