《资治通鉴·齐纪·齐纪八》
南齐军队围攻马圈城，整整围困了四十天，城中粮食尽绝，只好吃死人肉和树皮。
攻马圈城四十日，城中食尽，啖死人肉及树皮。
The Nan Qi forces laid siege to Maquan City, besieging it for forty days. The city's food supply was completely exhausted, and the people had to eat the flesh of the dead and the bark of trees.