This novel features a precognition-based mystery, a setting that often risks logical inconsistencies. However, this one is well-structured. The core trick revolves around imitation murders, and the highlight is a long timeline span. Both the crime and the revelation are closely tied to the precognition setting, making excellent use of it. The process of using precognition to foresee the crime scene first and then designing the method accordingly is something impossible to achieve in classic mysteries, which pushes the boundaries of mystery storytelling. However, like many time-travel or precognition-based stories, the logic is often written in a convoluted way, making it easy for readers to lose patience or even feel drowsy.