 He first invited his sister and the prince's wife, the Princess Taiyuan, to a feast.As soon as she left the prince's household, he sent assassins to force the prince to drink poison, and also killed his three sons.He buried the former emperor with imperial honors, but at a later point, for reasons unknown, he dug out the former emperor's casket and threw it into the Zhang River (漳水, flowing near Yecheng).