As seen on an elevator door in Shanghai. Warning: no leaning, no handstands, do not push the door, and do not grill the door. Wait what? The leaning and pushing I can understand, but the other two? “It is forbidden to grilled door” is just a bad translation; it should say something more to the effect of “Do not hold open the door.” But as for the handstand, they really are forbidding you from doing a handstand in the elevator. Head-scratcher that one. I never considered doing a handstand in an elevator before.