Western Yan
In winter 393, Murong Chui turned his attention to Western Yan. After leading Murong Yong to believe that he would attack Western Yan's capital Zhangzi (長子, in modern Changzhi, Shanxi) through Taihang Pass (太行, in modern Jiaozuo, Henan), he instead surprised Western Yan by attacking through Tianjing Pass (天井關, in modern Handan, Henan), quickly advancing on Zhangzi and began besieging it. Murong Yong sought aid from Jin and Northern Wei, but before Jin and Northern Wei forces could arrive, Murong Chui captured Zhangzi, killing Murong Yong and annexing Western Yan territory into Later Yan.