Epiphyllum Dream

In 1945, Cheng Cihang, a criminal investigation expert who had returned from a study tour, encountered a dangerous situation at the dock, and multiple forces fought for an iron box. This iron box contains top-secret files on the Japanese military's bacterial weapons. The Director of the Police Department, Mo Caishi, stored the iron box in a secret room of the archives, but the files were stolen at night, and the case became confusing. Cheng Cihang learned that the case was related to Japanese military bacterial weapons and asked "Uncle" Mo Caishi for help. Huo Ran, director of the Criminal Investigation Police Department of the General Administration, immediately appointed Cheng Cihang as a civilian detective. After Cheng Cihang took office, he quickly found clues and followed the clues to capture important clues one after another. However, he was blocked at every turn. Someone was always the first to kill the relevant people first. Who was the mastermind behind the scenes? Where is this lost file? The answer to how Cheng Cihang solved the puzzle lies in "Epiphyllum Dream".