Gao Shun
Cao Xing was a subordinate of Hao Meng, an officer serving under Lü Bu. One night in July or August 196, Hao Meng started a rebellion against Lü Bu in Xiapi (下邳; present-day Pizhou, Jiangsu), the capital of Lü Bu's domain Xu Province, and attacked Xiapi's administrative office. Lü Bu escaped from the office and went to the camp of his subordinate Gao Shun. Gao Shun led his soldiers to Lü Bu's office and drove away the rebels, who fled back to their own camp.