People enjoy sunset on a plank road at the Donghu Lake in Wuhan, capital of central China's Hubei Province, March 18, 2020. No new infections of the novel coronavirus were reported on Wednesday in Wuhan, the epicenter of the epidemic, marking a notable first in the city's months-long battle with the microscopic foe. (Xinhua/Shen Bohan)

A man walks on a plank road at the Donghu Lake in Wuhan, capital of central China's Hubei Province, March 18, 2020. No new infections of the novel coronavirus were reported on Wednesday in Wuhan, the epicenter of the epidemic, marking a notable first in the city's months-long battle with the microscopic foe. (Xinhua/Shen Bohan)

People enjoy sunset on a plank road at the Donghu Lake in Wuhan, capital of central China's Hubei Province, March 18, 2020. No new infections of the novel coronavirus were reported on Wednesday in Wuhan, the epicenter of the epidemic, marking a notable first in the city's months-long battle with the microscopic foe. (Xinhua/Shen Bohan)

A man enjoys sunset on a plank road at the Donghu Lake in Wuhan, capital of central China's Hubei Province, March 18, 2020. No new infections of the novel coronavirus were reported on Wednesday in Wuhan, the epicenter of the epidemic, marking a notable first in the city's months-long battle with the microscopic foe. (Xinhua/Shen Bohan)

A man walks on a plank road at the Donghu Lake in Wuhan, capital of central China's Hubei Province, March 18, 2020. No new infections of the novel coronavirus were reported on Wednesday in Wuhan, the epicenter of the epidemic, marking a notable first in the city's months-long battle with the microscopic foe. (Xinhua/Shen Bohan)