Before Cao Cao attacked Jingzhou, he stabilized people's hearts through a series of military and political actions. Xiliang Ma Teng was transferred by Cao Cao to Yecheng and became a hostage, and Ma Chao did not dare to move. And Gongsun Kang of Liaodong province also because Cao Cao collected karasuma, afraid that he would become the next karasuma, so he sent Yuan Shao's son's head and had already surrendered. Coupled with Cao Cao's addition of the title of Chancellor, stabilized the imperial court, so the rear was worry-free before waving his army south.
After Yuan Shao's forces collapsed, the only people in the north who could compete with Cao Cao were Ma Teng and Ma Chao's father and son in Xiliang. Cao Cao was jealous of the Western Liang cavalry at that time, but it was imminent to destroy Liu Bei, so Cao Cao, in the name of Cao Ting, made Ma Teng a wei lieutenant and entered the dynasty as an official. In fact, at that time, the imperial court was already controlled by Cao Cao, in fact, it was to let Ma Teng enter Kyoto as a hostage, and only Ma Chao could make Ma Chao scrupulous and dare not move.
In fact, the north of Cao Cao's meeting has been firmly held by Cao Cao, and there is no so-called instability in the hearts of the people in the north, and Boss Cao's political ability and logistics team are still beyond doubt. As for Xiliang and Liaodong, Gongsun Kang of Liaodong actually had advisers to sneak into Cao Cao's rear, but it is estimated that Gongsun Kang was frightened by Cao Cao's conquest of Wuhuan and refused to send troops.
When Cao Cao attacked Jingzhou, he had already eliminated the various separatist forces in the north and unified the north, while the xiongnu and Wuhuan of various ethnic minorities had already submitted to Cao Cao, and at this time the northern heart was stable and there was no worries, and Cao Cao began to march south.