Cao Caoli Wei Ruyun, assisted by Sima Yi, the son of the Prince, helped Cao Pi win the battle for the throne.

Sima Yi also protested when he reorganized the palace in Wei Mingdi. After Wei Mingdi's death, he was called upon to repair the palace, carve the human resources of playthings, save farming and make the world happy. In talent selection, Sima Yi promoted talents such as Wargo, JI Wang and Zhou Tai from the poor. As Yu Yu said, this is far from practical.

After the fall of Cao Shuang, Sima Yi weakened Cao Wei's imperial clan by extermination or imprisonment, which laid a solid foundation for his descendants to usurp Wei Jinkai in the future.

Extended data

Sima Yi was smart and knowledgeable since childhood, and he fell in love with Confucianism. Because of Cao Cao's family background, Sima Yi once refused the official position granted by Cao Cao. But in the 13th year of Jian 'an (208), after Cao Cao became prime minister, Sima Yi was forced to be a civil servant. Because Sima Yi once supported Cao Cao as emperor, he gradually gained the trust of Cao Cao.

Cao Caoli Wei Ruyun, assisted by Sima Yi, the son of the Prince, helped Cao Pi win the battle for the throne. On his deathbed, Xelloss appointed Sima Yi and Cao Zhen as ministers of Fuzheng to assist Cao Cao in Wei Mingdi. At that time, Sima Yi was transferred to important positions such as general, general and Qiu.

Ming Di collapsed, and Cao Fang, the orphaned young emperor, was given to Sima Yi and Cao Shuang. After Cao Fang succeeded to the throne, Sima Yi was first excluded by Cao Shuang, and then moved to be a teacher with no real power. Ten years ago (249), Sima Yi took advantage of Cao Shuang to accompany Cao Fang from Luoyang to Ping Ling to worship the mausoleum, staged a coup and took control of Luoyang in Kyoto. Since then, the military power of Cao Wei has fallen into the hands of Sima, which is called the change of Gao Pingling in history.

Sima Yi strategized and made many expeditions, among which the most remarkable achievement was that he led the army to successfully resist Zhuge Liang's Northern Expedition and pacify Liaodong twice. It has made important contributions to the development of farming economy such as reclamation and water conservancy.

References:

Baidu Encyclopedia-Sima Yi