《资治通鉴·齐纪·齐纪十》
这天晚上，东昏侯在含德殿笙歌弹唱，休息之后，还没有睡熟，听到兵进来了，就急忙从北门跑出去，想跑回后宫去，可是门已经关闭了。
东昏在含德殿作笙歌，寝未熟，闻兵入，趋出北户，欲还后宫，门已闭。
That night, Emperor Dong Hun was singing and playing music in the Hande Hall. After he went to bed, he was still awake when he heard soldiers advancing. He hurriedly ran out the north gate, intending to escape to the inner palace, but the gate was closed.