People pay a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Wuhan, central China's Hubei Province, April 4, 2020. (Photos: Xinhua)

People pay a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Wuhan, central China's Hubei Province, April 4, 2020.

Medical workers pay a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Wuhan, central China's Hubei Province, April 4, 2020.

People pay a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Wuhan, central China's Hubei Province, April 4, 2020.

A medical worker pays a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Wuhan, central China's Hubei Province, April 4, 2020.

People pay a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Feixi, east China's Anhui Province, April 4, 2020.

A student pays a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Feixi, east China's Anhui Province, April 4, 2020.

People pay a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Feixi, east China's Anhui Province, April 4, 2020.

Local residents pay a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Wuhan, central China's Hubei Province, April 4, 2020.

A driver gives a honk to pay tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Wuhan, central China's Hubei Province, April 4, 2020.

Local residents pay a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Wuhan, central China's Hubei Province, April 4, 2020.

Police mourn while traffic stops during a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Wuhan, central China's Hubei Province, April 4, 2020.

A sanitation worker pays a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Beijing, capital of China, April 4, 2020.

Pedestrians pay a silent tribute to martyrs who died in the fight against the novel coronavirus disease (COVID-19) outbreak and compatriots who died of the disease in Beijing, capital of China, April 4, 2020.