Aerial photo taken on Jan. 31, 2020 shows buildings illuminated with slogans to cheer the city on in Wuhan, central China's Hubei Province. (Xinhua/Xiao Yijiu)

Aerial photo taken on Jan. 31, 2020 shows buildings illuminated with slogans to cheer the city on in Wuhan, central China's Hubei Province. (Xinhua/Xiao Yijiu)

Aerial photo taken on Jan. 31, 2020 shows buildings illuminated with slogans reading "Come on, Wuhan" to cheer the city up in Wuhan, central China's Hubei Province. (Xinhua/Cheng Min)

Aerial photo taken on Jan. 31, 2020 shows a bridge illuminated with slogans reading "Come on, Wuhan" to cheer the city up in Wuhan, central China's Hubei Province. (Xinhua/Cheng Min)

Photo taken on Jan. 31, 2020 shows buildings illuminated with slogans reading "Come on, Wuhan" to cheer the city up in Wuhan, central China's Hubei Province. (Xinhua/Cheng Min)

Aerial photo taken on Jan. 31, 2020 shows a bridge illuminated with slogans reading "Come on, Wuhan" to cheer the city up in Wuhan, central China's Hubei Province. (Xinhua/Cheng Min)

Aerial photo taken on Jan. 31, 2020 shows buildings illuminated with slogans reading "Come on, Wuhan" to cheer the city up in Wuhan, central China's Hubei Province. (Xinhua/Cheng Min)

Photo taken on Jan. 31, 2020 shows buildings illuminated with slogans reading "Come on, Wuhan" to cheer the city up in Wuhan, central China's Hubei Province. (Xinhua/Cheng Min)

Aerial photo taken on Jan. 31, 2020 shows buildings illuminated with slogans reading "Come on, Wuhan" to cheer the city up in Wuhan, central China's Hubei Province. (Xinhua/Cheng Min)

Aerial photo taken on Jan. 31, 2020 shows buildings illuminated with slogans reading "Come on, Wuhan" to cheer the city up in Wuhan, central China's Hubei Province. (Xinhua/Cheng Min)