Prince of Qi
In 276, Emperor Wu suffered a major illness—which led to a succession crisis. Crown Prince Zhong would be the legitimate heir, but both the officials and the people hoped that Emperor Wu's capable brother, Sima You, the Prince of Qi, would inherit the throne instead. After Emperor Wu became well, he divested some military commands from officials that he thought favored Prince You, but otherwise took no other punitive actions against anyone.