Cao Chong, born at the end of the Eastern Han Dynasty, died at the age of 13, but left many historical allusions, such as: childhood elephant, wisdom to save the treasury official, Gu Ying self-pity, and divine friendship.
The sons of Emperor Cao Cao of Weiwu and Lady Huan, who were clever and clever from an early age, and were particularly benevolent, Cao Cao tried to kill people several times, but they were saved by Cao Chong's wit, and there were dozens of people before and after. Cao Cao praised Cao Chong many times in front of his courtiers, and had plans to let him inherit the great cause.
However, all this was seen by Cao Pi, since Cao Ang died in the battle of Wancheng, Cao Pi became the eldest son and deserved to inherit the great cause, but Cao Cao openly expressed his affirmation of Cao Chong, so Cao Pi thought of a way, that is, to poison Cao Chong's mother Lady Huan.

Once, Cao Pi sent someone to send ginseng soup to Lady Huan, which was accompanied by poison, and Lady Huan cared about her son and gave it to Cao Chong, who could not afford to fall ill after drinking it, and in order to protect Cao Chong's two younger brothers Cao Zhao and Cao Yu, they could only endure.
After Cao Chong's death, Cao Cao was devastated and bedridden. At this time, Cao Pi came to comfort him, and Cao Cao said a word to show that he was also suspicious of Cao Pi. Cao Cao said: Chong Er's death is my misfortune but your great fortune, at this time Cao Pi was very afraid and said: If I am willing to die for my brother, Cao Cao did not pursue it.
In fact, there is also a piece of evidence that Cao Chong's death has a certain relationship with Cao Pi:
After Cao Pi became emperor, he first demoted his brother Cao Zhi to a barbaric land, if it is because Cao Zhi and him competed for the throne, then it is also reasonable. But another brother, Cao Zhang, died after playing a game of chess with him, which is really unreasonable, and it is said that Cao Zhang only ate a few dates during the chess game. A person who killed his own brother, let alone the former Cao Chong.
Later, when the Sima family replaced Cao Wei, none of the imperial relatives rebelled, that is because from the time of Cao Pi, there were various suppressions on the clan relatives, so Cao Wei was powerless to resist, and later the Sima family learned lessons to give the clan princes the title of king, and finally the Rebellion of the Eight Kings occurred.