"If you make my life difficult, I'll make yours even harder. Do you think I don't have methods other than fighting and killing? Looking back, I even regret a bit. If I had used such means from the start to deal with you, then I probably wouldn't have been hurt for life."
His mention of lifelong injury, of course, refers to his third leg being crippled. Each time he thought of it, he felt dreadful and broke out in a cold sweat.
Whenever he thought of never being able to be a man again, his hatred for Chen Kai overflowed, reaching the point where it could not be more.
He knew that the hatred between himself and Chen Kai may not be resolved in this lifetime. Unless one of them died, the struggle would continue.
But could he truly obtain the final victory?