Murong Bao
When Murong Bao approached Longcheng in early summer 398, Lan Han sent his brother Lan Jia'nan (蘭加難) to welcome Murong Bao but in actuality to guard him. Against the advice of Yu Chong (餘崇), Murong Bao accepted Lan Jia'nan's escort, and right outside Longcheng, Lan Jia'nan executed Yu and Murong Bao. Lan Han would then slaughter most of the Murong clan and take over the empire, but spared Murong Sheng (because Murong Sheng was the husband of one of his daughters), and two months later Murong Sheng would overthrow Lan Han and reestablish Later Yan with himself as its emperor. However, Later Yan would not be a key player again in Chinese military matters, and would fall a decade later.