Aerial photo taken on Jan. 28, 2020 shows the construction site of Huoshenshan Hospital in Wuhan, central China's Hubei Province. The construction of Huoshenshan Hospital, a makeshift hospital for treating patients infected with the novel coronavirus, is underway in Wuhan. (Xinhua/Xiao Yijiu)

Aerial photo taken on Jan. 28, 2020 shows the construction site of Huoshenshan Hospital in Wuhan, central China's Hubei Province. The construction of Huoshenshan Hospital, a makeshift hospital for treating patients infected with the novel coronavirus, is underway in Wuhan. (Xinhua/Xiao Yijiu)

Aerial photo taken on Jan. 28, 2020 shows the construction site of Huoshenshan Hospital in Wuhan, central China's Hubei Province. The construction of Huoshenshan Hospital, a makeshift hospital for treating patients infected with the novel coronavirus, is underway in Wuhan. (Xinhua/Xiao Yijiu)

Aerial photo taken on Jan. 28, 2020 shows the construction site of Huoshenshan Hospital in Wuhan, central China's Hubei Province. The construction of Huoshenshan Hospital, a makeshift hospital for treating patients infected with the novel coronavirus, is underway in Wuhan. (Xinhua/Xiao Yijiu)

Aerial photo taken on Jan. 28, 2020 shows the construction site of Huoshenshan Hospital in Wuhan, central China's Hubei Province. The construction of Huoshenshan Hospital, a makeshift hospital for treating patients infected with the novel coronavirus, is underway in Wuhan. (Xinhua/Xiao Yijiu)

Aerial photo taken on Jan. 28, 2020 shows the construction site of Huoshenshan Hospital in Wuhan, central China's Hubei Province. The construction of Huoshenshan Hospital, a makeshift hospital for treating patients infected with the novel coronavirus, is underway in Wuhan. (Xinhua/Xiao Yijiu)

A laborer works at the construction site of Huoshenshan Hospital in Wuhan, central China's Hubei Province, Jan. 28, 2020. The construction of Huoshenshan Hospital, a makeshift hospital for treating patients infected with the novel coronavirus, is underway in Wuhan. (Xinhua/Xiao Yijiu)