The novel " Decryption " was a classical mystery novel created by Fang Yuan. It mainly described a man named Zhu Bangfu who used his wisdom and understanding of Chinese traditional culture to solve seemingly impossible mysteries and eventually became a famous Chinese cryptologist at that time. Zhu Bangfu was a man who loved traditional Chinese culture. In the process of researching encryption, he discovered a mysterious encryption system that could be used to control the political and economic systems of the time. He used his wisdom and talent to continuously study this password system and finally cracked some important password events in the late Qing Dynasty, making an important contribution to China's security. The novel also involved the historical background and the relationship between the characters, as well as some political events and conspiracies. The whole novel's plot is compact, the reasoning process is exciting, and the readers keep guessing and thinking in the process of reading. It has a high reading value.