《三国志·魏书·方技传》
曹彪被封为楚王，那一年五十七岁，因为跟王凌密谋造反而被赐死。
曹彪封楚王，年五十七，坐与王凌通谋，赐死。
Cao Biao was made King of Chu. That year, he was 57 years old. He was asked to commit suicide because he conspired to rebel with Wang Ling.