《后汉书·列传·方术列传下》
华佗为人脾气不好，很不得意，对以行医为职业感到羞耻，又离家太久想回去，于是向曹操请假，说是回去取药，到了京，说妻有病，过期不回来。
为人性恶，难得意，且耻以医见业，又去家思归，乃就操求还取方，因托妻疾，数期不反。
Hua Tuo is a person with a bad temper, very unhappy, ashamed of being a doctor, and wants to go home for too long, so he asked Cao Cao for leave, saying that he would go back to get medicine. When he arrived in Beijing, he said that his wife was sick and would not come back after the deadline.