Murong Chui (慕容垂) (326–396), courtesy name Daoming (道明), formally Emperor Wucheng of (Later) Yan ((後)燕武成帝) was a great general of the Chinese/Xianbei state Former Yan who later became the founding emperor of Later Yan. He was a controversial figure in Chinese history, as his military abilities were plain, but as he was forced to flee Former Yan due to the jealousies of the regent Murong Ping, he was taken in and trusted by the Former Qin emperor Fu Jiān, but later betrayed him and established Later Yan, leading to a reputation of him as a traitor. Further, his reputation was damaged in that soon after his death, the Later Yan state suffered great defeats at the hands of Northern Wei Dynasty's founder Emperor Daowu (Tuoba Gui), leading to the general sense that Murong Chui contributed to the defeats by not building a sound foundation for the empire and by choosing the wrong successor.
Read more about Murong Chui: During Former Qin, Era Names, Personal Information