It introduces Cheng Xiaoyu's "painful" life in the Xiling military camp (being practiced by his grandfather Cheng Tianba in the Blood Lion Fighting Technique, and being watched by his father to handle military affairs), and shows his background, core martial arts (a small degree of physical training, and sword skills that his grandfather said are "showy"), and character (complaining on the outside, but madly complaining about plans to run away in the heart). Finally found an opportunity (or excuse) to run away. The story of the world with Xu Fengnian (Suffering Friends) and the story of a time traveler who wants to use mechanical technology to dominate the mainland
