rulers of other states to more remote areas and granted the land of Guanzhong to the three surrendered Qin generals, ignoring Emperor Yi's earlier promise to appoint Liu Bang as king of that region. Liu Bang was relocated to the remote Hanzhong area and given the title of "King of Han" (). Xiang Yu appointed several generals from the rebel coalition as vassal kings, even though these generals were subordinates of other lords, who should rightfully be the kings in place of their followers. Xiang Yu also left out some other important rebel leaders who did not support him earlier, but did contribute to the overthrow of Qin. In winter, Xiang Yu moved Emperor Yi to the remote region of Chen, effectively sending the puppet emperor into exile. At the same time, he issued a secret order to the vassal kings in that area and had the emperor assassinated during his journey in 205 BC. The emperor's death was later used by Liu Bang as political propaganda to justify his war against Xiang Yu. Shortly after the death of Emperor Yi, Xiang Yu had Han Cheng (King of Hán) put to death and seized Han's lands for himself. Several months later, Tian Rong (chancellor of Qi) took control over the Three Qis (Jiaodong, Qi and Jibei) from their respective kings and reinstated Tian Fu as the King of Qi, but he took over the throne himself afterwards. Similarly, Chen Yu, a former vice chancellor of Zhao, led an uprising against the King of Changshan, Zhang Er, and seized Zhang's domain and reinstalled Zhao Xie as the King of Zhao. Chu–Han Contention Battle of Pengcheng In 206 BC, Liu Bang led his forces to attack Guanzhong. At that time, Xiang Yu was at war with Qi and did not focus on resisting the Han forces. The following year, Liu Bang formed an alliance with another five kingdoms and attacked Western Chu with a 560,000 strong army, capturing Xiang Yu's capital of Pengcheng. Upon hearing this, Xiang Yu led 30,000 men to attack Liu Bang and defeated the latter at the Battle of Pengcheng, with the Han army suffering heavy casualties. Battle of Xingyang Liu Bang managed to escape after his defeat with Xiang Yu's troops on pursuit. Han troops retreated to Xingyang and defended the city firmly, preventing Chu forces from advancing west any further, but only managed to hold on