《南史·列传·卷七十九》
元嘉十五年，冯弘被魏国进攻，战败逃奔到高丽北丰城，并上表请宋朝派人去接他回去。
元嘉十五年，冯弘爲魏所攻，败奔高丽北丰城，表求迎接。
In the fifteenth year of Yuangjia, Feng Hong was attacked by the Wei state and he lost the battle. He fled to Beifengcheng in Goguryeo, and sent a memorial to the Song court, asking them to send someone to escort him back.