There has to be an explanation!?....

You can sue officials in China? Really?
They have airbags in cars in China? Must be Chevys.
Lights on a job site will get stolen in China? I assume that is what pinched means.
Need to send them some of those orange cones. They are probably made in China anyway.

That is truly one of the dumbest things I've seen in my life. It's clearly a major highway. There should be signs, cones, and flashing arrows diverting cars off the road at the previous intersection. It doesn't even look like you can turn around once you reach the wall.

Unbelievably STUPID

I want to know how they ever got it built without traffic running over the wallbuilders in the first place.