In the ears of the spies, the Crown Prince's voice was brimming with mockery. It only served to infuriate them in the midst of housing their fright. The clashing emotions disabled them from making appropriate decisions. They were simply frozen in place, reduced to contemplating what they ought to do in the next second.
On the other hand, the Crown Prince's eyes were full of vicious mirth. He didn't care as to how the spies would confront him. He was confident in his abilities. That was sufficient to give him the freedom of being composed in such a situation.
The Crown Prince abided for the spies to take action first. In no circumstances would he opt to strike foremost. That would be considered assault and the law wouldn't favour him.
