As part of an agreement with Qin forces not to harm his people, Wei Jiu committed suicide by setting himself on fire.
Wei Bao joined the Chu general Xiang Yu in attacking Qin-controlled territories as they advanced towards the Qin heartland in the Guanzhong region.
Around the time, a power struggle broke out between Xiang Yu and Liu Bang, the King of Han, for control over the lands of the former Qin Empire.
Liu Bang then sent Han Xin and Cao Shen to lead his forces to attack Wei Bao.
When Xiang Yu's forces besieged and attacked the city, Zhou Ke (周苛), another of Liu Bang's officers guarding Xingyang, felt that Wei Bao was not trustworthy given that he had betrayed Liu Bang before.