Yu Liang
Han Zhao was destroyed by its separatist state, Later Zhao, in 329. By that year, Later Zhao had either defeated or vassalized Jin's northern allies (except for Murong Hui of Liaodong) and virtually unified northern China. This, along with the devastation caused by Wang Dun and Su Jun's rebellions prompted Jin to wait for an opening while recovering their strength for the time being. There were a number of attempts to reclaim the north by generals in the south, namely Zu Ti, Li Ju and the Yu brothers, Yu Liang and Yu Yi, but they had very little support from the court and were all met with failure.