Cao Cao, also spelled Mengde, nicknamed "Ah Qi", was a prominent figure in the late Eastern Han Dynasty. Cao Cao was also a family of official eunuchs, and his grandfather Cao Teng was a famous eunuch of the Eastern Han Dynasty and adopted Cao Cao's father Cao Song. Cao Song also achieved the position of Third Duke, and later gave birth to Cao Cao. Cao Cao's father was originally surnamed Xiahou, so there were many military generals named Xiahou in Cao Cao's camp (such as Xiahou Huan and Xiahou Yuan), and these people were also Cao Cao's own family. Very early on, Cao Cao held up filial piety and erected multicolored sticks at the gate to show his authority. The young Cao Cao was also a young man with aspirations to serve the country, but after a long period of beating, he finally achieved the unification of the north and became the most powerful hegemon of the three kingdoms.

However, people who are not sages can be blameless, after all, in the process of becoming the hegemon of one side, it is difficult, and it is inevitable that some mistakes will be made in this process. Either he has a profound lesson for himself, or he has an impact on future generations. For example, in the second year of Jian'an (197 AD), when Cao Cao was on the southern expedition, Zhang Xiu saw that he could not fight, and he thought of surrendering, Cao Cao was notoriously lustful, and at the same time accepted Zhang Xiu, he also accepted the widow of Zhang Xiu's father Zhang Ji, which made Zhang Xiu very depressed. Cao Cao saw that Zhang Xiu was not happy, so he planned to get rid of it, but the plan leaked, so that Zhang Xiu came to a sneak attack, in this battle, Cao Cao lost his eldest son Cao Ang, nephew Cao Anmin, love the general Dianwei, and made Cao Cao and his wife very unhappy.
In 208 AD, the famous surgeon who invented the Five Birds Play, the doctor Hua Tuo, died in Cao Cao's prison. At that time, Hua Tuo wrote a medical book, hoping that the jailer could pass on his medical works, but the jailer was afraid of being investigated and did not dare to accept it, and Hua Tuo had no choice but to burn the medical book. Cao Cao always had headaches, and Hua Tuo was famous, so he asked Hua Tuo to treat him. Hua Tuo's death has always been a mystery, and there are many theories, but he did die at the hands of Cao Cao. Cao Cao died at the age of 65, which was not unrelated to his headache.
In the fifth year of Jian'an (200 AD), Cao Cao went to attack Liu Bei, and Liu Bei fled to Yuan Shao, only to be captured by Cao Cao at this time, after which Guan Yu surrendered to Cao Cao, and Cao Cao killed Yan Liang with the help of Cao Cao's camp. Cao Cao saw Guan Yu bravely and fiercely, and always wanted to keep Guan Yu under the account, and always sent Guan Yu's friend Zhang Liao to be a lobbyist, hoping to keep Guan Yu behind, but Guan Yu resolutely left Cao Cao after learning of Liu Bei's downfall. However, Cao Cao made a suggestion to let Cao Cao get rid of it quickly, and Cao Cao cherished Guan Yu's loyalty and did not agree. Guan Yu was ugly, chopped Huaxiong, rode alone for thousands of miles, and slashed six generals after five levels are not found in the historical records. When Guan Yu was defending Jingzhou, he posed a great threat to Cao Cao, flooding the Seventh Army and capturing him. Fortunately, Guan Yu was later killed by Lü Meng's design. Otherwise, Cao Cao was likely to lose a corner of Jingzhou, Xiangfan.
"Heroes of the world, only kings and ears." When he heard this, he only saw a thunderclap in the sky, which frightened Liu Bei's chopsticks to fall to the ground. Cao Cao laughed, and the two continued to drink. After hearing this, he asked Cao Cao to attack Yuan Shu, and Cao Cao actually agreed to let him go. This happened in the fourth year of Jian'an (199 AD), when he was still a man who was running around under the fence. After listening to Cao Cao's words, Liu Bei knew that Cao Cao would definitely not be able to tolerate him in the future, so he retreated in stealth in time. After the Three Kingdoms, Liu Bei also laid his own ground card, and formed a three-legged momentum with Sun Quan Cao Cao.
In 260 AD, Sima Zhao's dictatorship, then the Emperor of the State of Wei, Cao Xian rebelled against Sima Zhao, because he was young and did not have much power in his hands, so the final rebellion failed, and Cao Xian was also killed by Chengji. Subsequently, Cao Yan was established as emperor, in fact, the actual power of the State of Wei was already in the hands of Sima Shi, Cao Yan was just a puppet, in 265 AD, Sima Zhao's death transferred the power to his son Sima Yan, Sima Yan also learned from Cao Pi, let the emperor of the dynasty make Zen concessions, the Jin Dynasty was established, and the State of Wei was destroyed. The result of this was that Cao Cao trusted Sima Yi more, and after his death, he underestimated Sima Yi's power, which eventually led to the state of Wei that he had single-handedly defeated, and it was destroyed 45 years after his death.