The Incident at Gaoping Tombs was where Sima Yi's coup d'etat against Cao Shuang took place, gave rise to the Sima family's power during the Three Kingdoms period in China, and established the Jin Dynasty.
The Incident at Gaoping Tombs in 249 was a coup d'etat against initiated by Sima Yi against the rival faction led by Cao Shuang in the court of Cao Wei during the Three Kingdoms period of China. The incident gave rise to the Sima family's power, and provided the foundation of the upcoming Jin Dynasty.