Yao Hong, who immediately faced threats from both Jin and Xia forces, was heavily dependent on his uncle Yao Shao to face both these external threats, and the rebellions by his brothers and cousins, who apparently believed him to be an easy target to seize the throne from. The Jin general Liu Yu, seeing Later Qin's internal unrest as an opportunity, launched a major attack in fall 416 and quickly seized the eastern half of Later Qin, including the important city of Luoyang.