"Aiyo! I didn't expect that Li Yan would find the master of this illusion!" Cheng Sheng laughed as he sat on top of the boulder chewing the melon seeds while looking at Li Yan and the master of the illusion fight against each other. "He is really talented. No wonder sect leader Li is very happy!" he said and smiled. "Kang Ce, too, is also dedicated. Tch! As expected of sect leader Li's direct disciples!" he slapped his thigh.
Earlier, while Kang Ce and Li Yan were talking about You Rou and Qian Tian's love story, he sensed that there was something wrong in the valley so he secretly masked his presence so that only Kang Ce and Li Yan would be sensed by the master of the illusion. Then, he snuck inside the illusion to warn Kang Ce and Li Yan. That is why both of them are fighting against the illusion that the enemy created and hasn't fallen until now while he continues to hide his existence from the master of the illusion.