DING discovers a methodology to defeat the Tearless Sword in the manuscript and begins to practice. However, AI YEE has more faith in the Merciless Sword Skill and begins practicing the final series. On the day of the duel, DING fights CHIU WING with his newfound technique but is unable to counter him. At this moment, AI YEE appears and kills CHIU HUNG with her Merciless Sword. During the process of mastering the Merciless Sword Skill, AI YEE is somewhat obsessed by the evil skill. She begs DING to kill her but he refuses. Finally, AI YEE decides to hideaway and convalesces. After three months, AI YEE manages to regain a sense of her true self and has a happy reunion with DING.