Aerial photo taken on March 8, 2020 shows the construction site of Qingshui River extra large bridge in Jianhe, southwest China's Guizhou Province. The project resumed construction in an orderly way. (Xinhua/Yang Wenbin)

Aerial photo taken on March 8, 2020 shows the construction site of Qingshui River extra large bridge in Jianhe, southwest China's Guizhou Province. The project resumed construction in an orderly way. (Xinhua/Yang Wenbin)

People work at the construction site of Qingshui River extra large bridge in Jianhe, southwest China's Guizhou Province, March 8, 2020. The project resumed construction in an orderly way. (Xinhua/Yang Wenbin)

Aerial photo taken on March 8, 2020 shows the construction site of Qingshui River extra large bridge in Jianhe, southwest China's Guizhou Province. The project resumed construction in an orderly way. (Xinhua/Yang Wenbin)

Laborers work at the construction site of Qingshui River extra large bridge in Jianhe, southwest China's Guizhou Province, March 8, 2020. The project resumed construction in an orderly way. (Xinhua/Yang Wenbin)

Photo taken on March 8, 2020 shows the construction site of Qingshui River extra large bridge in Jianhe, southwest China's Guizhou Province. The project resumed construction in an orderly way. (Xinhua/Yang Wenbin)

Photo taken on March 8, 2020 shows the construction site of Qingshui River extra large bridge in Jianhe, southwest China's Guizhou Province. The project resumed construction in an orderly way. (Xinhua/Yang Wenbin)

Photo taken on March 8, 2020 shows the construction site of Qingshui River extra large bridge in Jianhe, southwest China's Guizhou Province. The project resumed construction in an orderly way. (Xinhua/Yang Wenbin)