Sima Yi was a very strategic man during the Three Kingdoms period. He was also Zhuge Liang's true rival in the State of Wei. In the Romance of the Three Kingdoms, looking around the Three Kingdoms period, all the famous scholars in the world are inferior to Zhuge Liang, but Sima Yi is very close to Zhuge Liang's level. Cao Cao once showed Sima Yi a picture and found that Sima Yi was a wolf, so he told his son Cao Pi not to use Sima Yi, let alone give him military power. I have to admire Cao Cao's vision. Unsurprisingly, Sima Yi launched a rebellion during the reign of Cao Fang and seized power from Gao Pingling, laying the foundation for his grandson Sima Yan to establish the Jin Dynasty. Objectively speaking, Sima Yi was very talented. He was only slightly worse than Zhuge Liang in terms of strategy and military management.
But Sima Yi was different from Zhuge Liang, who was loyal to the emperor and the imperial court, while Sima Yi was ambitious. Judging from Sima Yi's life experience, he was only afraid of three people. Cao Cao was a man of great literary talent, and he had a heart of the world in his heart, a strategic man, and a master of military strategy. Moreover, the founding father of the State of Wei was very confident. Emperor Xian of Han was under the command of Cao Cao, and Xu Chu, Zhang Liao, and other generals went to Cao Cao, Xun Xi, guo jia, Jia Xu, and other places to strategize. However, Boss Cao saw through Sima Yi's ambitions and had already asked Cao Pi not to hand over his military power. Sima Yi was afraid of Cao Cao.
Cao Pi was also able to control Sima Yi. During the reign of Emperor Wen of Wei, Sima Qian could only follow the rules and did not dare to do improper things. Although the Wei Ming Emperor Cao Rui did not have great skills, he could subdue Sima Yi obediently. The Great Ambitionist looked at Cao Rui's holy will, only to kowtow, he would definitely not disrespect Cao Rui.
Not to mention Zhuge Liang. This prodigy attacked the State of Wei six times, and almost all of his opponents were Sima Yi. According to the battle records of both sides, Zhuge Liang defeated Sima Yi and even nearly killed him several times. If it hadn't been for the sudden rain in the sky, Sima and his son would have died in the fire. Later, Sima Yi was defeated by Zhuge Liang and almost died under Liao Hua's sword. After these two terrible experiences, Sima Yi learned to be a man, and as soon as he saw Zhuge Liang, he hid in the camp and did not come out. Therefore, Sima Yi was afraid of Zhuge Liang.