S1·E16 Episode 16

In fact Tzu Chang-ling has already known Wu-chi's identity. Without knowing that it is a trick for him, Wu-chi tells them where Shih Sun is. But later, he discovers the affairs between Chiu-chen and Wei Hi and understands that it is only a trick. He leaves angrily.

Chang-ling find Wu-chi but they fall down the cliff after a struggle. Wu-chi goes into the Tao Yuan Cave while Chang-ling waits outside. There, Wu-chi discovers a Kung #u book and practices Piercing Sun Skill.

Yu-chun finds Chin-niu and Nan Ku were killed. He reports this to Wu Tang School. They are all worrying about Wu-chi.