Feng Hong
Because Feng Hong still viewed Goguryeo as a vassal and often looked down on its people, he continued to treat his people as an independent state, ignoring the Goguryeo laws and ignoring King Jangsu's orders. King Jangsu could not endure this, and he sent troops to seize some of Feng Hong's ladies in waiting, and also seized Feng Wangren as hostage. By 438, Feng Hong was so angry that he sent messengers to Liu Song, requesting that he be escorted to Liu Song. Emperor Wen sent the general Wang Baiju (王白駒) to Goguryeo, ordering Goguryeo to prepare to let Feng Hong leave. King Jangsu was unwilling to let Feng Hong depart, and so sent his generals to execute Feng Hong and his sons, although he gave Feng Hong an imperial posthumous name. In response, Wang attacked the Goguryeo forces who executed Feng Hong. However, King Jangsu seized Wang and sent him back to Liu Song, demanding that he be imprisoned, and Emperor Wen did so for a time before releasing him.