《资治通鉴·汉纪·汉纪六》
现在中原汉人虽自称有礼义，但随着亲属关系的日益疏远，就相互仇杀争夺，以至于改姓，都是由于这个原因，咳！
今中国虽云有礼义，及亲属益疏则相杀夺，以至易姓，皆从此类也。
Now, although the Han people of the Central Plains claim to have ethical relationships, as their kinship ties grow more distant, they end up killing and fighting each other, to the point of changing their surnames—this is the reason; alas!