Sima Yi was one of the most outstanding figures in the Three Kingdoms period, and his wisdom and strategy could be equal to Zhuge Liang's, and his employment was comparable to Cao Cao's, but such a man with wolf ambitions was willing to work under Cao Cao and was very afraid of Cao Cao. Although Sima Yi always wanted to seize cao Wei's power, but under the majesty and suppression of Cao Cao, he did not dare to act rashly, even if Cao Cao died, Sima Yi only dared to rebel 30 years after Cao Cao's death, so what made Sima Yi so afraid of Cao Cao, then this has to start from a dream.
According to historical records, Cao Cao could kill people in his dreams, and when this rumor spread, people did not dare to sneak up on Cao Cao while he was sleeping, which also allowed Cao Cao to sleep peacefully and not follow in Dong Zhuo's footsteps. Once, on the night before the Battle of Guandu, Cao Cao also had a strange dream, he dreamed that there were three horses in his horse pen, and these three horses had only one slot, and in a few moments, the three horses ate the hay in the manger. Later he said he woke up in a cold sweat.
A dream like this, if replaced by someone else, will certainly not pay more attention to it. But according to historical records, Cao Cao has always been a suspicious person, and now he is in a very special position, so Cao Cao will certainly not let go of any unfavorable thing, although it is only a dream. After much thought, Cao Cao found that this manger was like Cao Cao's State of Wei, and the three horses that snatched food and ate in the manger were like three people with the surname of horses, did it mean that three people wanted to divide the State of Wei?
Finally, Cao Cao began to think of Sima Yi and Sima Yi's two sons, Cao Cao thought that this dream referred to Sima Yi's family, but looking back, Sima Yi's two sons were not enough to pose a threat, so was it Ma Chao's father and son in Xiliang? But now the most powerful opponent Cao Cao needs to face is Yuan Shao, but The Ma Chao family in Xiliang really can't take it lightly.
However, soon Ma Teng, of Ma Chao's family, was booby-trapped, Ma Chao and Ma Dai also surrendered, and finally assisted Liu Bei in his conquest for Liu Bei, and Cao Cao finally determined that the three horses referred to Sima Yi's family. However, Sima Yi was very extreme, and Cao Cao reused Sima Yi because he saw Sima Yi's talent, but for Sima Yi, in each conquest, he either pretended to be ill or found other reasons to resign. Sima Yi had always been afraid of Cao Cao's fierce style, so when Cao Cao was alive, he always bowed his head when he should have bowed his head, but the reason for all this was because of the dream that Cao Cao had. Sima Yi finally rebelled 30 years after his death, because although Cao Cao died at that time, his prestige was still there, and if he chose to come out at this time, he would definitely be looking for death.