Aerial photo taken on Aug. 9, 2020 shows the installation site of the last steel box girder of a grand cable-stayed railway bridge over Xijiang River in south China's Guangdong Province. The grand cable-stayed bridge, a section for the Nansha Port railway, has finished its final steel box girder installation on Sunday. (Xinhua/Liu Dawei)

Aerial photo taken on Aug. 9, 2020 shows the installation site of the last steel box girder of a grand cable-stayed railway bridge over Xijiang River in south China's Guangdong Province. The grand cable-stayed bridge, a section for the Nansha Port railway, has finished its final steel box girder installation on Sunday. (Xinhua/Liu Dawei)

Aerial photo taken on Aug. 9, 2020 shows the installation site of the last steel box girder of a grand cable-stayed railway bridge over Xijiang River in south China's Guangdong Province. The grand cable-stayed bridge, a section for the Nansha Port railway, has finished its final steel box girder installation on Sunday. (Xinhua/Liu Dawei)

Aerial photo taken on Aug. 9, 2020 shows the installation site of the last steel box girder of a grand cable-stayed railway bridge over Xijiang River in south China's Guangdong Province. The grand cable-stayed bridge, a section for the Nansha Port railway, has finished its final steel box girder installation on Sunday. (Xinhua/Liu Dawei)

Aerial photo taken on Aug. 9, 2020 shows the installation site of the last steel box girder of a grand cable-stayed railway bridge over Xijiang River in south China's Guangdong Province. The grand cable-stayed bridge, a section for the Nansha Port railway, has finished its final steel box girder installation on Sunday. (Xinhua/Liu Dawei)