Feng Hong.

About Feng Hong

Feng Hong, courtesy name Wentong (文通), also known by his posthumous name as the Emperor Zhaocheng of Northern Yan (北燕昭成帝), was the last monarch of the Chinese Northern Yan dynasty. He seized the throne in 430 when his brother Feng Ba was ill, and he used the title "Heavenly King". During his reign, the Northern Yan grew increasingly smaller and weaker in light of repeated attacks by rival Northern Wei dynasty, and in 436 he evacuated his state and fled to Goguryeo, ending the Northern Yan. Once in Goguryeo, however, he assumed the role of Goguryeo's suzerain. King Jangsu of Goguryeo, unable to stand Feng Hong's antics, killed him in 438 although he gave Feng Hong a posthumous name.