Qin Er Shi
Although Qin was able to suppress most of the nationwide rebellions, they still caused serious damage. Qin's manpower and supplies were greatly reduced. Finally Qin was decisively defeated in the Battle of Julu. Qin Er Shi foolishly tried to have the Qin general responsible Zhang Han killed, which led to the surrender and later live burial of 200,000 Qin troops. In total, Qin lost over 300,000 men. Even then, Qin Er Shi didn't take the defeat seriously, as he thought Qin had many more spare troops. Finally, a daring and loyal eunuch told Qin Er Shi the truth. In shock, Qin Er Shi tried to capture Zhao Gao and hold him responsible.