Presumably everyone knows the Tsukasa Simadai of the Three Kingdoms Period. Simadai mastered Cao Wei's power only after experiencing the three generations of Cao Wei and Gao Pingling. As for why you have to wait until this time, everyone must be curious.
First of all, Sima Yi, the word Zhong Da, is a Henan native today. Famous Wei statesman, military strategist, and important minister of the Wei Kingdom during the Three Kingdoms period. Sima Yi has learned from childhood and is good at classic books of Confucianism. As a teenager, he had a strategy and had a good relationship with the famous hermit Hu Zhao. We can see from Sima Yi's life experience that this man was not a black-bellied man. He received higher education from an early age. As a somewhat noble man, he even looked down on Cao Cao's background. In addition, Sima Yi refused to enter the officialdom at first. In his heart, the people and social leaders were still very important. He had his own ideals and ambitions. Later, after Cao Cao became the prime minister, he used coercive methods to recruit Sima Yi as an official. Later, Sima Yi was forced to enter the officialdom because of fear of Cao Cao.
During the period of Cao Yu and Cao Rui, Ma Yan was heavily reused. He held heavy power. Although everyone had ambitions, he never thought about going to rebellion. Until Cao Rui's death, Cao Fang took the throne, and at that time Cao Shuang, the son of Cao Zhen who was in conflict with Sima Yi, was in power. Sima Yi's exclusion was the only one that inspired his ambition.
During the Emperor Ming Dynasty, Sima Yi was promoted to official positions many times, and once served as the general of the army, general, and lieutenant. Later the Emperor Ming collapsed and entrusted the young emperor Cao Fang to Sima Yi and Cao Shuang before his death. After that, Sima Yi was in an empty office. At this time, Sima Yi would choose to spend this last life in an unpredictable way, or he would fight hard. In the end, his ambitions finally broke out, and Sima Yi, who had practiced for so many years in the officialdom, was no longer the one with the pure high ideals. Sima Yi deliberately pretended to be ill, and cultivated 3,000 deadpool secretly. In 249 AD, Cao Shuang accompanied Cao Fang to leave Cao Fang to go to the Gao Ping Mausoleum for the sacrifice tombs and initiate the transformation of the Gao Ping Mausoleum. In the final battle of Gao Pingling, Sima Yi won a great victory, seized the world of Cao and opened the era of Sima.
Sima Yi died of illness in 251 AD at the age of 73, and was named Xuanwen. Secondly, Sima Zhao regarded him as the king of Xuan. Later he was pursued by Emperor Xuan.