《后汉书·列传·方术列传下》
当时华佗的小儿子正在门内玩耍，看见病人，迎进屋，就道： 客人车边有蛇，一定是见到我家老头子了。 
时佗小兒戏于门中，逆见，自相谓曰： 客车边有物，必是逢我翁也。 
At that time Hua Tuo's youngest son was playing inside the door. He saw the patient, greeted him into the house and said: The guest has a snake by his carriage, so he must've met my old man. 