Short story
The martial arts leader's youngest son was naughty, and the martial arts leader was reluctant to teach him, so he hired a gentleman.
This gentleman looked like a weak man, but he never thought he was an unborn expert. On the first day he came, he beat the youngest son of the leader of the martial arts league into submission.
Later, for some reason, I hit the bed again and again.
Purpose: Don't judge people by their appearance.