Detective novels were a genre of novels that used plot reasoning and logical reasoning as the main techniques to promote the development of the story through the deduction of characters and the revelation of clues. The following is an introduction to a few common types of mystery novels: 1. Basic reasoning: also known as "classical reasoning" is a kind of reasoning novel based on logic and evidence. The main characters were usually logicians or detectives who needed to analyze clues and evidence to solve problems. 2. Social Reasoning: Also known as "psychological reasoning", it focuses on the description of the character's personality and social background, emphasizing the reader's understanding and inference of the character. Storylines were usually more complicated and required the reader to have a certain degree of reasoning and analytical ability. Supernatural reasoning: also known as "fantasy reasoning" usually involves supernatural phenomena or mysterious forces such as magic, monsters, supernatural events, etc. Storylines were usually more complicated and required a certain amount of imagination and reading ability. 4. Eastern Mystery: Japanese mystery novels are a very popular genre, including classic works such as Detective Conan, White Night Walk, and The Sacrifice of Suspect X. The storyline usually involved Japanese culture and historical background, but also focused on reasoning and logical analysis. 5. Science fiction reasoning: Science fiction reasoning usually involves events in the future or in the field of science and technology. The storyline is usually more complicated and requires the reader to have a certain imagination and reading ability. The above are a few common types of detective novels. Different types have different characteristics and styles. The readers can choose the works that suit them according to their own preferences and reading needs.