Volunteers on the tallest-ever skywalk outside the 88-storied Jinmao Tower in Shanghai, on July 25, 2016. (Photo/Asianewsphoto.com)
Visitors participating in the activity mustn't walk on the skywalk until they leave their belongings behind in the storage boxes. And if visitors want photos, workers need to take them. Let's have a look at some daredevil volunteers before the official opening.
