The novelette “merciful sword” follows the consistent style of Yan Leisheng’s Novels: Allan Poe’s structural layout, Zhang Henshui’s narrative style and O.Henry’s ending, showing the author’s brilliant imagination, profound cultural accomplishment and serious writing attitude. The adaptation author man Tianxue added a little meat drama on the basis of the original work, making it a good color article. The story is composed of two parts. The first part is the story of “Da Bei Dao”: on the 60th birthday of Duan Songqiao, the master of forging Feng hall, comes to fight with the dagei Dao in his hand and asks for the Daci Dao lost by his master Yinzong. After a bloody battle, he takes Duan’s younger sister and goes away, followed by Tan Guang’s younger brother, monk Zhenxiu, and gradually reveals the level of the heroes of the world The second part is the story of “Da CI Dao”, which describes the conflict between Zhenxiu / Daci Dao / Nianhua Chan and tanguang / Dabei Dao / Jingang Zen, and the process of tanguang’s self doubt, struggle and salvation.