One night in 196, a subject of Lü Bu named Hao Meng rebelled. Hao ordered his troops to surround the government office of Xiapi, where Lü Bu resided. The startled Lü had to climb over the wall of a toilet and escape to the camp of Gao Shun. Lü told Gao that the leader of the rebels has a Henei accent, and Gao Shun says that it must be Hao Meng. Gao then led a force to quell the rebellion. By the next morning, Hao Meng and his troops had all been forced to retreat back to their own camp. Cao Xing, a subordinate of Hao Meng, turned on Hao Meng and the two duelled. Cao Xing was injured in the fight but cleaved an arm off of Hao Meng. Gao Shun had also identified the rebels, and arrived at the scene to finish off Hao Meng (who was a man from Henei or captain of the Henei soldiers).