A major theft case occurred at H City University, and the underage cousin of Detective Mai Jie from the 9th Investigation Division of the Criminal Investigation Bureau, Midosi, was kidnapped near the crime scene, causing public concerns about the possibility of retaliation against Mai Jie. Midosi's safety has become a focus of attention.

9、 Mystery of the Chamber of Secrets

On the way to the train station, Mai Jie received a call from Ouyang Yanyan, hoping to help search for the missing Midosi. Ouyang Yanyan revealed that he had solved the mystery of the secret room and realized that anyone who knew the secret could be in danger. He told Maijie to wait at the train station. Mai Jie and Pi Xiaodong quickly rushed to the train station and searched for Ouyang Yanyan on the radio. At the train station, they cooperated with the police at the station station station to continue searching for the suspected vehicle. Ouyang Yanyan finally appeared and shared his theory: the "coin rolling on the ground" mentioned by Midosi before his disappearance inspired him. He speculated that the suspect might have modified the floor during the decoration of the exhibition hall to enable it to tilt, so that the meteorite could roll to the air conditioning drain hole. He also explained how the meteorite rolled out of the display case and how the suspect took the meteorite through the drain hole. Ouyang Yanyan's reasoning provided new clues and directions for the case.