In 327, after hearing news that Han Zhao had suffered losses at Later Zhao's hands, Zhang Jun disavowed all titles granted by Han Zhao and returned to Jin titles, and attacked Han Zhao's Qin Province (秦州, modern eastern Gansu).
In 333, in the aftermaths of Shi Le's death and the coup by his nephew Shi Hu, a number of Later Zhao generals rebelled and tried to seek Jin and Former Liang assistance.