As the picture shows, you can see Shi Yuzhu in the company of other people are leaning on the road fence, road fence keeps them away from the cars so they could talk freely, and no need to worry about their safety. Road fence , we also call it temorary fence, welded fence, pvc coated temporary fence, the construction of the fence is welded wire mesh, metal frame and also the metal base. Often this kind fence be used in roadside, concert  and other crowded place and almost every street  to keep order and safety.  If you pay attention, you'll see this kind fence all around, it's really popular and practical.