Why is the collapse of the Sima family because of a child's counterattack?

Because Huan Wen and Sima's family had a blood feud, Sima's family was incompetent in the Eastern Jin Dynasty and was finally brought down by constant temperature.

In the late Three Kingdoms period, the Sima family was severely suppressed. If Sima Yi does not rebel, he will be executed by Cao Wei, represented by Cao Shuang, so Sima Yi can only rebel. In the process of preparation, Sima Yi found Huan Fan, a military commander of Cao Wei, hoping that Huan Fan could defect with himself, but Huan Fan didn't want to, and he swore allegiance to Cao Wei to the death.

Unfortunately, Sima Yi later launched a mutiny, and directly issued instructions from the Queen Mother to kill Cao Shuang. Cao Fang also became a puppet emperor, so Sima Jia came to power. At this time, Sima Yi naturally hated Huan Fan and directly found a reason for genocide, but Huan Fan's youngest son, Huan Wen, was not found and was preserved.

When the Eastern Jin Dynasty was established, Huan Wen was a secretariat and participated in the war. He has made a lot of contributions and his influence in the imperial court is growing. Although he had a good time in the Eastern Jin Dynasty, Huan Wen always remembered his blood feud with Sima's family and kept on forbearing, hoping to bring down Sima's family one day and avenge the family.

At this time, the emperor Sima Yi's ability was not strong, and he was far from the founding emperor Sima Yan. He couldn't beat Huan Wen politically, and Huan Wen took control of the imperial power step by step.

When the time was right, Huan Wen launched a mutiny, directly overhead Sima Yi and made Sima Yi a new puppet emperor. Soon, Huan Wen directly abolished the emperor and stood on his own feet, eliminating the Sima family.

Although Sima Yi was clever all his life, he missed a child, and his successor was too incompetent, which made Cao Shijia's experience repeat itself.