Battle of Fei River
Early that year, he heard that his uncle Murong Chui had rebelled against Former Qin rule in light of the Former Qin emperor Fu Jiān's defeat at the Battle of Fei River in 383. He fled from his post and gathered several thousand Xianbei soldiers and, after defeating the Former Qin general Qiang Yong (強永), claimed for himself the titles of supreme commander and governor of Yong Province (雍州, modern central and northern Shaanxi), but did not claim a more honored regal title than the one he had under Former Yan—Prince of Jibei.