《三国志·魏书·武帝纪》
八月，曹公东征海贼管承，到了淳于县，派遣乐进、李典进攻并击败他，管承逃到海岛上去了。
秋八月，公东征海贼管承，至淳于，遣乐进、李典击破之，承走入海岛。
In August, General Cao marched east to punish the pirates led by Guan Cheng. He arrived at Chunyu County, and sent Yue Jin and Li Dian to attack and defeat Guan Cheng. Guan Cheng fled to the sea.