Lin Kong felt quite dissatisfied in his heart; he was here to teach him martial arts, not to be a servant. He wanted the Fourth Prince to understand this point, so he became increasingly cold toward him. Even the Master has a temper; don't think you're so remarkable just because you're the Fourth Prince. Don't forget, right now you need me.
Initially, when he first met the Fourth Prince, he noticed that he was brooding over his blinded eyes. Perhaps out of personal interest, he told him there was a way to restore his original appearance, but the risk was great.
At first, the Fourth Prince was somewhat unbelieving when he heard it was possible to restore his looks.
One has never heard of such things in the world: that even after one's eyes have been gouged out, they can grow back.
