《南史·列传·卷七十九》
百济本与句丽都在辽东以东千余里，晋朝时句丽占据了辽东后，百济也占据了辽西、晋平二郡的地方，自己设置了百济郡。
其国本与句丽俱在辽东之东千余里，晋世句丽既略有辽东，百济亦据有辽西、晋平二郡地矣，自置百济郡。
Baekje and Goguryeo were both located more than a thousand li east of Liaodong. After Goguryeo occupied Liaodong during the Jin Dynasty, Baekje also occupied Liaoxi and Jinping Commanderies and established Baekje Commandery.