" Detective Conan " was a Japanese detective novel written by Aoyama Gangchang. It told the story of a high school detective, Kudo Shinichi, who was forced to take a small medicine when he was investigating the dark organization. After that, he became a primary school detective, and as Conan, he solved various cases with the primary school detective team. The protagonist of the story, Kudo Shinichi, was a genius detective. He had excellent reasoning ability and keen observation skills, always solving complicated cases by himself. Conan was a primary school student. He was quick-witted, flexible, good at observation and thinking, but also had some innocence and sense of humor unique to primary school students. In the story, Conan and his elementary school friends often faced various challenges and dangers, but they always found the real criminal through various clues and evidence. At the same time, Conan continued to discover new things and knowledge that made his reasoning ability stronger. Detective Conan was not only a classic mystery novel, but also a work full of humor and warmth. It depicted the friendship, trust, and mutual support between a group of cute characters, as well as their continuous growth and pursuit of the truth. Whether you are a fan of mystery novels or a reader interested in primary school characters, this book is worth reading.