《宋书·志·卷二十五》
当时慕容超自立于齐，侵略徐、兖二州，连年侵掠，至于淮水、泅水之间。
是时慕容超僭号于齐，侵略徐、兗，连岁寇抄，至于淮、泗。
At that time, Murong Chao established himself in Qi and invaded the Xu and Yan regions, plundering them for years, between the Huai River and the Si River.