Aerial photo taken on April 26, 2020 shows the construction site of the Xiangjiang bridge in southwest China's Guizhou Province. With strict COVID-19 prevention and control measures in place, construction work of the 1,700-meter bridge has been resumed recently. (Xinhua/Liu Xu)

Photo taken with a mobile phone on April 25, 2020 shows the construction site of the Xiangjiang bridge in southwest China's Guizhou Province. With strict COVID-19 prevention and control measures in place, construction work of the 1,700-meter bridge has been resumed recently. (Xinhua/Liu Xu)

People work at the construction site of the Xiangjiang bridge in southwest China's Guizhou Province, April 26, 2020. With strict COVID-19 prevention and control measures in place, construction work of the 1,700-meter bridge has been resumed recently. (Xinhua/Liu Xu)

Aerial photo taken on April 26, 2020 shows the construction site of the Xiangjiang bridge in southwest China's Guizhou Province. With strict COVID-19 prevention and control measures in place, construction work of the 1,700-meter bridge has been resumed recently. (Xinhua/Liu Xu)

Aerial photo taken on April 26, 2020 shows the construction site of the Xiangjiang bridge in southwest China's Guizhou Province. With strict COVID-19 prevention and control measures in place, construction work of the 1,700-meter bridge has been resumed recently. (Xinhua/Liu Xu)

Aerial photo taken on April 26, 2020 shows the construction site of the Xiangjiang bridge in southwest China's Guizhou Province. With strict COVID-19 prevention and control measures in place, construction work of the 1,700-meter bridge has been resumed recently. (Xinhua/Liu Xu)

Aerial photo taken on April 26, 2020 shows the construction site of the Xiangjiang bridge in southwest China's Guizhou Province. With strict COVID-19 prevention and control measures in place, construction work of the 1,700-meter bridge has been resumed recently. (Xinhua/Liu Xu)

Aerial photo taken on April 26, 2020 shows the construction site of the Xiangjiang bridge in southwest China's Guizhou Province. With strict COVID-19 prevention and control measures in place, construction work of the 1,700-meter bridge has been resumed recently. (Xinhua/Liu Xu)