《资治通鉴·晋纪·晋纪十二》
杜曾攻陷北门，朱伺受伤，退走上船，打开船底入水，在水底潜行了五十步，才得以幸免。
曾攻陷北门，伺被伤，退入船，开船底以出，沉行五十步，乃得免。
Du Zeng captured the north gate, Zhu Si was injured, retreated and boarded a boat; he opened the bottom of the boat to let in water, and under water swam fifty paces, that's the only way he barely survived.