They do it differently here

So in the US when you come upon a construction site you are expecting it.  There are signs, there are traffic cones, there are guys in orange vests standing around... you know warnings.  In Chengdu, you're driving along and-- Hey! There's a guy in the middle of the street spreading asphalt with a shovel! 

... and yes, that is regular traffic trying to figure out a way to get around the man with the shovel and the machinery.