Threat
In the times when Japan ruled the Koreans, there was a zen master called Hyewal who was famous even in Japan. One Japanese knight heard of him and came to Korea to test Hyewal's Dharma.
He abruptly entered Hyewal's room and said threateningly with his sword out, "I hear you are an accomplished being. If it is true, you are supposed to survive this sword. Now, please escape from my sword." Then he was about to hit Hyewal's neck with the sword.
Then Hyewal said calmly, "If you want to kill me as a skilled knight, you don't have to be accompanied." Then the knight looked at the open door to see who was out there. This moment, Hyewal stabbed him with his wand and said, "How absent-minded you are as an honorable knight. If this baton were a knife, you should have been killed."
The Japanese knight was astonished and ashamed of himself. He bowed to him and disappeared.