Cao Cao Cao Cao (Bao Guoan decoration) killed Ma Teng. Ma Dai came back to report to Ma Chao. Ma Chao raised troops to attack Cao Ying, Cao Jun was defeated. Ma Chao pursued him closely, Cao Cao cut off his beard and robe to cover himself. Just when Cao Cao was almost overtaken by Ma Chao, Cao Hong rushed to rescue Cao Cao. In order to block the fast horse spears of Ma Chao's troops, Cao Cao took advantage of the severe cold and watered the frozen soil to build the city. Ma Chao attacked again, and fought Xu Chu for several rounds, regardless of the outcome. Cao Cao failed to cross the Wei River, so he was escorted by Xu Chu and fled to the south bank to camp. Jia Xu offered a plan of separation to deal with Ma Chao and Han Sui. After Cao Cao waited for Ma Chao to leave the city, he went to the city with Han Sui to reminisce about the past. Ma Chao came late at night to ask Han Sui what he and Cao Cao were talking about, and he was already wary of Han Sui. Ma Chao killed the Cao Jun spies who spread rumors that Ma Teng and Han Sui had fought in the camp, and saw Cao Cao sent someone to Han Sui with a smeared letter. Han Sui declared his innocence, saying that he called Cao Cao to answer before the battle, and asked Ma Chao to rush out and kill him. Cao Cao. When Han Sui called Cao Cao in front of the battle, General Cao Ying replied that there must be no mistake in Prime Minister Cao's letter last night. When Ma Chao heard that his attempt to kill Han Sui failed, he left angrily. Han Sui and his men surrendered to Cao Cao and agreed to capture Ma Chao alive, but Ma Chao found out. Ma Chao killed Han Sui and several of his subordinates in a rage. At this time, Cao Jun attacked the city, and Ma Dai and others protected Ma Chao and left the city.