樊城之戰
Cao Cao wanted to relocate residents in Jing Province and Yingchuan Commandery further north as he felt that they were too close to enemy territory in the south. Sima Yi, however, advised him against doing so and said: "The Jing and Chu regions are unstable. The people are easy to move but hard to pacify. As Guan Yu has been recently defeated, bad people will go into hiding. If we move the good people, we might cause them to feel distressed and unwilling to return to our side." Cao Cao heeded Sima Yi's advice. The people affected by the Battle of Fancheng later managed to revert to their original livelihoods before the battle.