1. Heavy Fog: The name is concise and powerful. Through the symbol of "fog", it implies that there are many unsolved mysteries in the story, while "heavy" emphasizes the complexity and twists and turns of the reasoning process.
2. The Mystery of the Midnight Bell: Using the mysterious and tense element "Midnight Bell" to arouse readers' curiosity, the word "Mystery" directly points out that the core of the story is to solve the mystery.
3. Bloody logic: Bloody and logic do not appear together, and this contrast produces an impact. Bloody implies elements of crime or violence, while logic emphasizes the importance and rigor of the reasoning process.