《魏书·列传·卷六十七》
当时萧衍派他的豫章王萧综据守徐州，萧综写密信给元，说想归顺。
时萧衍遣其豫章王综据徐州，综密信通彧，云欲归款。
At the time, Xiao Yan had sent his Prefect of Yu Zhang, Xiao Zong, to guard Xu prefecture, Xiao Zong wrote a secret letter to Yuan, saying that he wanted to surrender.