Aerial photo taken on Feb. 27, 2020 shows people working at the construction site of Tuanjie Grand Bridge of Renhuai-Zunyi Highway in southwest China's Guizhou Province. The construction of the bridge has been resumed recently amid strict prevention measures against the novel coronavirus. (Photos: Xinhua)

A worker works at the construction site of Tuanjie Grand Bridge of Renhuai-Zunyi Highway in southwest China's Guizhou Province, Feb. 27, 2020. The construction of the bridge has been resumed recently amid strict prevention measures against the novel coronavirus.

People work at the construction site of Tuanjie Grand Bridge of Renhuai-Zunyi Highway in southwest China's Guizhou Province, Feb. 27, 2020. The construction of the bridge has been resumed recently amid strict prevention measures against the novel coronavirus.

People work at the construction site of Tuanjie Grand Bridge of Renhuai-Zunyi Highway in southwest China's Guizhou Province, Feb. 27, 2020. The construction of the bridge has been resumed recently amid strict prevention measures against the novel coronavirus.

Aerial photo taken on Feb. 27, 2020 shows the construction site of Tuanjie Grand Bridge of Renhuai-Zunyi Highway in southwest China's Guizhou Province. The construction of the bridge has been resumed recently amid strict prevention measures against the novel coronavirus.

Aerial photo taken on Feb. 27, 2020 shows the construction site of Tuanjie Grand Bridge of Renhuai-Zunyi Highway in southwest China's Guizhou Province. The construction of the bridge has been resumed recently amid strict prevention measures against the novel coronavirus.

Aerial photo taken on Feb. 27, 2020 shows people working at the construction site of Tuanjie Grand Bridge of Renhuai-Zunyi Highway in southwest China's Guizhou Province. The construction of the bridge has been resumed recently amid strict prevention measures against the novel coronavirus.

Aerial photo taken on Feb. 27, 2020 shows the construction site of Tuanjie Grand Bridge of Renhuai-Zunyi Highway in southwest China's Guizhou Province. The construction of the bridge has been resumed recently amid strict prevention measures against the novel coronavirus.