Aerial photo taken on April 7, 2020 shows a night view in Wuhan, central China's Hubei Province. Wuhan, the megacity in central China, started lifting outbound travel restrictions from Wednesday after almost 11 weeks of lockdown to stem the spread of COVID-19. (Xinhua/Shen Bohan)

Aerial photo taken on April 7, 2020 shows the illuminated Yellow Crane Tower, or Huanghelou, a landmark of the city of Wuhan, central China's Hubei Province. Wuhan, the megacity in central China, started lifting outbound travel restrictions from Wednesday after almost 11 weeks of lockdown to stem the spread of COVID-19. (Xinhua/Xiao Yijiu)

Aerial photo taken on April 7, 2020 shows a night view in Wuhan, central China's Hubei Province. Wuhan, the megacity in central China, started lifting outbound travel restrictions from Wednesday after almost 11 weeks of lockdown to stem the spread of COVID-19. (Xinhua/Xiao Yijiu)

Aerial photo taken on April 7, 2020 shows the illuminated Yellow Crane Tower, or Huanghelou, a landmark of the city of Wuhan, central China's Hubei Province. Wuhan, the megacity in central China, started lifting outbound travel restrictions from Wednesday after almost 11 weeks of lockdown to stem the spread of COVID-19. (Xinhua/Xiao Yijiu)

Aerial photo taken on April 7, 2020 shows a night view in Wuhan, central China's Hubei Province. Wuhan, the megacity in central China, started lifting outbound travel restrictions from Wednesday after almost 11 weeks of lockdown to stem the spread of COVID-19. (Xinhua/Xiao Yijiu)

Aerial photo taken on April 7, 2020 shows a night view in Wuhan, central China's Hubei Province. Wuhan, the megacity in central China, started lifting outbound travel restrictions from Wednesday after almost 11 weeks of lockdown to stem the spread of COVID-19. (Xinhua/Xiao Yijiu)