The fortune teller said that he had orders from the king and rebelled the next day. Why did he only be king for one night?

Sitting next to the emperor's imperial meal with his accomplices, while eating, he praised his accomplice Sue for her accurate calculation and forgot about catching the emperor. However, when they remembered, the reinforcements in the palace had arrived. In the blink of an eye, they were wiped out. The two men were surrounded before they could escape. Finally, they all died by the arrow.