Editing Later Yan (section)

=== Background ===
[[Murong Chui]] was the son of [[Murong Huang]], the founder of the [[Xianbei]] [[Former Yan|Former Yan dynasty]], and a key military general; in 369, he saved the state from ruin by defeating an Eastern Jin invasion led by [[Huan Wen]] at the [[Battle of Fangtou]]. On the other hand, he was also a subject of suspicion within the imperial family. After defeating Huan Wen, the regent, his uncle [[Murong Ping]] became apprehensive of his newfound reputation and wanted to kill him, prompting Chui to flee to the [[Di (Five Barbarians)|Di]]-led [[Former Qin]] dynasty.

In the next few years, Qin conquered Yan and reunified northern China. Although Qin's ruler, [[Fu Jian (337–385)|Fu Jian]] treated him favourably, Chui harboured ambitions to restore his state. He fought for Qin in campaigns against the Eastern Jin and was one of the few officials who supported the ill-fated invasion of 383, which saw the Qin's disastrous defeat at the [[Battle of Fei River]]. As Chui's army remained mostly intact after the battle, he escorted the injured Fu Jian back to the north.

Sensing weakness, Chui began carrying out his restoration, but rather than kill Fu Jian, he requested to be transferred to [[Hebei]], where Former Yan once ruled, ostensibly to maintain order in the region. There, he cooperated with Fu Jian's son, [[Fu Pi]], under mutual suspicion while secretly contacting the old Yan families and officials to join his movement. In 384, the [[Dingling|Dingling people]] led by [[Zhai Bin]] rebelled around Luoyang. Fu Pi sent Chui to attack them, but during the campaign, Chui finally rebelled, joining forces with Zhai Bin.