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Sima Yi successively assisted Cao Cao, Cao Pi, Cao Rui and Cao Fang in history, and Cao Cao served as a minister during the Cao Cao period to help Cao Pi win the throne; During Cao Pi's period, he was already a core minister of Cao Wei, and before Cao Pi's death, he became one of the four auxiliary ministers; During the Cao Rui period, Sima Yi began to formally lead the troops to fight, attacking Mengda, Yu Zhuge and destroying Liaodong, and was one of the two auxiliary ministers left by Cao Rui; In the Cao Fang era, Sima Yi defeated Cao Shuang, and in the later period, he became the master of Cao Wei. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

【Cao Cao's Advisors】

Sima Yi was young and promising, born in a big family, but because the Han family had declined at that time, Sima Yi was reluctant to be Cao Cao's subordinate.

In the thirteenth year of Jian'an (208), after Cao Cao became the prime minister, he used coercive means to dismiss Sima Yi as a literary scholar. After that, Sima Yi and Cao Cao's son Cao Pi had a lot of contacts, and was one of Cao Pi's four friends.

After Cao Cao pacified Zhang Lu in Hanzhong, Sima Yi persuaded Cao Cao to send troops to attack Yizhou, but Cao Cao refused. Before Guan Yu crusaded against Cao Ren, Sima Yi also pointed out that Hu Xiu, the assassin of Jingzhou, was rude, and Nanxiang was too arrogant and arrogant to guard Fu Fang, and should not be stationed at the border, and Cao Cao did not pay attention to it. Later, both of them betrayed and surrendered to Guan Yu. After Guan Yu flooded the Seventh Army, Sima Yi and Jiang Ji worked together to dissuade Cao Cao from moving the capital, thinking that they could win over Sun Quan to deal with Guan Yu, and later Sun Quan really sent troops to attack Jiangling.

Cao Cao believed that the remnants of Jingzhou and the soldiers and civilians in Yingchuan Tuntian were approaching the southern bandits and wanted to move them away. Sima Yi believes: "Jing Chu is easy to take off, easy to move and difficult to be safe. Guan Yu is newly broken, and all the evildoers are hiding and watching. Those who are good now, not only will hurt their will, but will make those who have gone dare not return. Cao Cao listened to his advice and did not emigrate. The fugitives who had fled from Tibet before had indeed returned to naturalization.

At the time of the seizure, Sima Yi was one of Cao Pi's main supporters, but unfortunately there is no record of the specific case of him helping Cao Pi to seize the heir.

【Cao Pi Chongchen】

After Cao **, Cao Pi ascended to the throne, Sima Yi became a celebrity under Cao Pi, and his official position was promoted quickly.

Cao Pi abandoned this place because of the broken Xiangfan and was afraid of Sun Quan's attack, and Sima Yi thought that Sun Quan would definitely not offend Cao Wei to seize this place, but Cao Pi did not listen, and later regretted it. When Cao Pi was in power, he went south many times to crusade against Sun Quan, and Sima Yi guarded Xuchang, and once issued an edict to Sima Yi saying: "I am deeply concerned about the future, so I take it as a secretary." Although Cao Shen has military exploits, Xiao He is important. So that I don't have to worry about the West, no! After Cao Pi's last southern expedition, he returned to Luoyang from Guangling, and issued an edict to Sima Yi: "My east, Fu Jun should be the chief of the west; Wuxi, Fu Jun is the general affairs of the east. ”

When Cao Pi was dying, he made Sima Yi, the general of the Chinese army, Cao Zhen, the general of the Zhen army, Chen Qun, and the general of the Eastern Expedition, Cao Xiu, as auxiliary ministers. also said to the crown prince Cao Rong: "There are three princes here, be careful not to doubt them." ”

【Commander Cao Rui】

During the Cao Cao and Cao Pi periods, Sima Yi did not have the experience of commanding troops to fight, and it was not until Cao Rui took power that Sima Yi really began his military career, when Sima Yi served as a general and a lieutenant.

Compared with others, Sima Yi was already in a high position, so the starting point of leading the troops was very high, and he led the troops as a commander at the beginning, and Sima Yi's first battle was to resist the invasion of Jiangdong. After Cao Rui came to power, Sun Quan immediately gave him a dismount, personally led his troops to attack Jiangxia, and also sent Zhuge Jin and Zhang Ba to attack Xiangyang, Sima Yi led the troops to resist, repelled Sun Quan, defeated Zhuge Jin, and killed Zhang Ba.

In the first year of Taihe (227), Meng Da united with Zhuge Liang and plotted to make a rebellion, which was pacified by Sima Yi at lightning speed, and Shen Yi, who was autocratic here, was also transferred by Sima Yi, and this battle was one of Sima Yi's three major military exploits in the future. In this year, Emperor Cao Rui of the Ming Dynasty asked Sima Yi about the strategy of crusading against Wu Shu, and Sima Yi thought that he should first crusade against the Jingzhou Jiangxia area of Wu State. The following year, Cao Xiu sent troops to meet the Wu general Zhou Yi who had surrendered fraudulently, and Sima Yi also cooperated with the troops, and was soon recalled.

In the fourth year of Taihe (230), Cao Zhen attacked Shu on a large scale, Sima Yi and Zhang He and others cooperated with Cao Zhen to send troops, Sima Yi opened up the road from Xicheng, advanced by land and water, went up the river along the river, went straight to Quren, conquered Xinfeng County, garrisoned Dankou, and then met the rain class.

In the fifth year of Taihe (231), because Cao Zhen was seriously ill and returned to the court, Emperor Cao Rui of the Ming Dynasty took Sima Yi as the commander of the Western Front to fight against Zhuge Liang, who surrounded Qishan, and sent him to the west to garrison Chang'an, and the governor of the left general Zhang He and Yongzhou Assassin Guo Huai to defend the Han army.

Sima Yi first ensured most of the grain and grass in the Shangtai area, and then Zhuge Liang retreated, and carried out a head-to-head duel with him in the Lucheng area of Qishan, Sima Yi was defeated, a slight loss, Zhuge Liang retreated back to Hanzhong because of insufficient supplies, he sent Zhang He to pursue, and Zhang He died in ambush.

In the first year of Qinglong (233), Hu Bojuzi, the Xiongnu lord of Stability and Baosai, rebelled, and Sima Yi sent Hu Zun and others to pursue and surrender.

In the second year of Qinglong (234), Zhuge Liang personally led the army to lead the army to defeat Cao Wei for the fifth time, and the two sides carried out a confrontation in the area of Wuzhangyuan, Zhuge Liang attacked in the early stage, so he invited Sima Yi to face off head-on, Sima Yi avoided the battle, and in the later period, Zhuge Liang was half a soldier and half a farmer, and even sent flowers and clothes, Sima Yi still refused to fight, and finally Zhuge Liang died of illness in Wuzhangyuan.

After surviving Zhuge Liang, Sima Yi once sent troops to pursue, and the Shu general Yang Yi returned to the flag and beat the drums, making a counterattack, and Sima Yi retreated with the 'poor Kou Mo chasing'. After the Shu Han infighting, Yang Yi killed Wei Yan, and Sima Yi wanted to take the opportunity to attack Shu, but Cao Rui refused. The following year, Sima Yi was promoted to the rank of lieutenant and increased the number of feuds. The Shu general Ma Dai invaded the country, and Sima Yi sent Niu Jin to meet the attack and beheaded more than 1,000 Shu troops. Wudu Di Wang Fu Shuanghe Qiang Duan led more than 6,000 of his subordinates to surrender.

In the second year of the early Jing Dynasty (238), Cao Rui sent Sima Yi to crusade against Gongsun Yuan of Liaodong for the third time, and he united with Youzhou Assassin Shi Biqiu Jian and others to pacify Liaodong in one fell swoop. The following year, Cao Rui died, and the Taiwei Sima Yi and the general Cao Shuang assisted the young emperor Cao Fang.

【Cao Fangquanchen】

During the Cao Fang period, Cao Shuang first seized power, with Sima Yi as the concubine, ascended and descended secretly, and gradually controlled Cao Wei's political and military power in his own hands, because Cao Shuang was a relative of Cao Wei, Sima Yi could not stop it, and could only watch Cao Shuang's dictatorship. In the second year of Zhengshi (241), Sun Quan sent troops to the north on several routes, and Sima Yi personally sent troops to repel the Wu general Zhu Ran, and later recaptured Anhui City from Zhuge Ke.

Sima Yi opposed Cao Shuang's dispatch of troops to attack Shu and the confinement of Empress Dowager Guo, but unfortunately it was fruitless, and Sima Yi could only go home after saying that he was sick and plotting to defeat Cao Shuang.

Cao Shuang was already preparing to rebel in the later stage, so he sent Li Sheng to test Sima Yi, but Sima Yi easily fooled him, making Cao Shuang and others no longer pay attention to it. In the tenth year of Zhengshi (249), Sima Yi finally staged a coup d'état in Luoyang when the three brothers of Cao Shuang and Cao Fang were worshipping the tomb of Emperor Wei Ming, Gaoping Mausoleum, and ousted Cao Shuang from power in one fell swoop.

After the coup, Sima Yi became the de facto master of Cao Wei, and he suppressed the Cao clan and promoted his own cronies, laying the foundation for the Sima family to come to power in the future.

In the third year of Jiaping (251), Wang Ling, the military commander of Huainan, was preparing to make a rebellion, Sima Yi personally went south to quell the rebellion in one fell swoop, Wang Ling committed suicide, and Sima Yi died soon after.