I think the OP means "when you can feel by touch that he is off-balance, take a step toward him with your hands on him and maintaining peng, and he will fall over."
Taking a long time but I think we are getting there! thank you, 'falling over' is better than 'falling down' which sounds like they just fainted away. If there's actual 'hands on' technique to making your opponent fall over then that's believable, now whether it's a workable or efficient technique I'll leave the CMA people to argue over.