The most backbone pseudo-king in the history of China is Cao Mao, grandson of Wei Wendi Cao Pi. At that time, the imperial power was in the hands of Sima Jia. Finally, Cao Maolin said a wise saying before he died, "Everyone knows the heart of Si Mazhao".

In the history of our country for thousands of years, there are many wise kings and many incompetent kings. Although in ancient times, emperors were supreme, some were puppet emperors with empty titles and no real power. There is a saying that "Si Mazhao's heart is well known", which means that Cao Mao, the king of Cao Wei in the Three Kingdoms period, was the grandson of Wei Wendi Cao Pi. Since the reign of Wei Mingdi and Cao Rui, the power of the imperial court has fallen into the hands of the Sima family. Later, Cao Fang, the Emperor of Wei Shao, tried to remove the rights of the Sima family, but he failed and was deposed.

At this time, Cao Mao, the grandson of Cao Pi, was elected emperor and began his puppet emperor life. At that time, Cao Taizu was only 14 years old, but he was already thoughtful and had his own ambitions, and he also implemented some "benevolent policies" to unite people and save Cao Wei. However, even if he is ambitious and talented, he is no match for Sima Jia. The Si Mazhao brothers are in power all the year round, and they are good at scheming.

Everyone knows Si Mazhao's mind. He is bossing around Cao Mao, but there is no one around Cao Mao who can be used. The ending has been decided. Cao Mao thought it was better to die vigorously than to live humbly, so he later uttered the golden sentence "Si Mazhao's heart is well known" and embarked on the road of resisting Si Mazhao. But this is definitely throwing eggs at a stone. Finally, Cao Mao was stabbed to death on the spot by Si Mazhao's men in full view.