Located on the border of Guizhou and Yunnan provinces, Beipanjiang bridge is the world's highest bridge with a height of 565.4 meters above Beipanjiang Grand Valley.

As a section of an expressway linking Hangzhou in Zhejiang province and Ruili in Yunnan province, the bridge boasts a span of 720 meters, the second-largest in the world. It is also the world's first cable-stayed bridge with a main span of over 500 meters

Complicated geographical conditions made it difficult to build the bridge but led to several technological advancements during construction, including 11 patents.

Che Weiwei contributed to this story.