In order to eradicate He Fuyin, the three of them set up a trap and divided their troops into three groups.When the plan was going smoothly, He Fuyin set a trap to lure them into the trap.At the critical moment, Cheng Yiyi and Wen Chenyi disguised themselves as jailers and held He Fuyin hostage. Yu Yidao found evidence of correspondence between He Fuyin and Ning Taishi.
Everyone returned to Beijing with witnesses and evidence, but they were assassinated by someone sent by Master Ning. Wen Chenyi was seriously injured to protect Cheng Yiyi.Wen Chenyi was poisoned and fell unconscious. Cheng Yiyi learned that the person who poisoned him was Taishi Ning.In order to save Wen Chenyi, Cheng Yiyi and Feng Qiwu went to Duanhun Mountain to find the poison doctor Tang Jueming and obtain the Phoenix Grass.Cheng Yiyi solved the puzzle of Shimen through wisdom and entered the thatched cottage to meet Tang Jueming.