昔有医人，自媒能治背驼，曰：“如弓者，如虾者，如曲环者，延吾治，可朝治而夕如矢。”一人信焉，而使治驼。乃索板二片，以一置地下，卧驼者其上，又以一压焉，而即屣焉。驼者即直，亦复随死。其子欲鸣诸官。医人曰：“我业治驼，但管人直，那管人死！”

Once a doctor boasted he was able to heal kyphosis. He said:"whether you are like a bow, like a shrimp or crooked, after my treatment in the dawn, you will resume straight in the dark." One man trusted him and went for him for a treatment.The doctor took two pieces of boards, and put one on the ground, which he let the patient lie, and then put the other one on the patient's body, next he stepped on the board. As a result, the bow-backed resumed straight at once, but died soon. the bow-backed's son sued him to the feudal official. The doctor responded:"my occupation is a doctor to treat crookback,just made the bend to straightness,how can I guarantee their live or die!"