Aerial photo taken on March 17, 2021 shows the Yangbaoshan grand bridge of Guiyang-Huangping Highway in southwest China's Guizhou Province. With a main span of 650 meters, the grand bridge stretches 1,112 meters in length. Currently, the construction of the bridge has entered the final stage of steel truss beam installation. Photo: Xinhua

Workers walk on a catwalk at the construction site of the Yangbaoshan grand bridge of Guiyang-Huangping Highway in southwest China's Guizhou Province, March 17, 2021. With a main span of 650 meters, the grand bridge stretches 1,112 meters in length. Currently, the construction of the bridge has entered the final stage of steel truss beam installation. Photo: Xinhua

Photo taken on March 17, 2021 shows a night view of the construction site the Yangbaoshan grand bridge of Guiyang-Huangping Highway in southwest China's Guizhou Province. With a main span of 650 meters, the grand bridge stretches 1,112 meters in length. Currently, the construction of the bridge has entered the final stage of steel truss beam installation. Photo: Xinhua

Aerial photo taken on March 18, 2021 shows the Yangbaoshan grand bridge of Guiyang-Huangping Highway in southwest China's Guizhou Province. With a main span of 650 meters, the grand bridge stretches 1,112 meters in length. Currently, the construction of the bridge has entered the final stage of steel truss beam installation. Photo: Xinhua