赵高
In 207 BC, Zhang Han attacked the insurgent Zhao kingdom and besieged Zhao forces at Julu. Xiang Yu of the Chu kingdom came to Zhao's aid and defeated the Qin army at the Battle of Julu, despite having a smaller force. Zhang Han sent Sima Xin to the capital Xianyang to request for reinforcements. Sima Xin later reported to Zhang Han that reinforcements would not be arriving, and that the state power of Qin had fallen into the hands of Zhao Gao. Zhang Han was aware that even if he defeated the rebels, Zhao Gao would later frame him for treason and have him executed, hence he decided to surrender to Xiang Yu. Xiang Yu accepted the surrender.