《魏书·帝纪·卷七》
秋七月，光州百姓孙晏聚集同党一千多人造反，并与刘昱交结，刺史叔孙讨伐平定了他们。
秋七月，光州民孙晏等聚党千余人叛通刘昱，刺史叔孙璝讨平之。
In autumn, July, Sun Yan, a citizen of Guang Prefecture, gathered over a thousand of his partisans to revolt, and conspired with Liu Yu. Governor Shu Sun attacked and pacified them.