China people are the cleverest. There are policies on the top and countermeasures on the bottom. Traffic signs are for reference only. When you run a red light, your heart doesn't jump, your breath doesn't breathe, and your face doesn't change color. In Shanghai, I wait for the green light before crossing the road. The little girls ran a red light. They turned around and gave me a light smile and whispered "idiot". China people are very clever.