 The Western and Eastern Jin dynasties together make up the second of the Six Dynasties.Under the Wei, who dominated the northern parts of China during the Three Kingdoms period, the Sima clan—with its most accomplished individual being Sima Yi—rose to prominence, particularly after the 249 "coup d'état"; historically known as the Incident at the Gaoping Tombs.After Sima Yi's death, his eldest son, Sima Shi, kept a tight grip on the political scene, and after his own death, his younger brother, Sima Zhao, assisted his clans' interests by further suppressing rebellions and dissent, as well as recovering all of Shu and capturing Liu Shan in 263.