He used Mafeisan (a kind of narcotic made of herbs) to anesthetize patients for abdominal operations.His application of general anesthesia was the earliest on record in world medical history.

• 曾用“麻沸散”使病人麻醉后施行剖腹手术，是世界医学史上应用全身麻醉进行手术治疗最早的记载。