《资治通鉴·汉纪·汉纪十九》
匈奴前任单于仰慕汉朝的礼仪教化，一心向善，自称是汉的小弟弟，派使臣请求和亲，使天下人感到欣慰，四方夷狄外族无不知晓。
前单于慕化乡善，称弟，遣使请求和亲，海内欣然，夷狄莫不闻。
The former Chanyu of the Huns admired the etiquette and education of the Han Dynasty, devoted himself to doing good, called himself the younger brother of the Han Dynasty, sent envoys to ask for peace, making people all over the world feel pleased, and the foreigners in all directions did not know.