《资治通鉴·唐纪·唐纪四十》
代宗下令宰相率领常参官、鱼朝恩率领六军将领前往国子监听讲儒家经典，他们的子弟都穿紫红衣服作为学生。
命宰相帅常参官、鱼朝恩帅六军诸将往听讲，子弟皆服硃紫为诸生。
Emperor Daizong ordered the prime minister to lead the permanent officials and Yu Chaoyin to lead the generals of the six armies to the Imperial College to listen to lectures on Confucian classics. Their children all wore purple and red clothes as students.