6、 Consecutive accidents

In front of the glass door of the exhibition hall, Midosi and his companions noticed a piece of paper stuck under the door handle, which was unusually low and aroused suspicion. The door is made of explosion-proof glass, and the electronic lock is hidden inside the wall, which can only be opened by someone who knows the password. Captain Wang and Deputy Secretary Cao are the only people who know the password, and the password is changed regularly. Ma Weika speculated that the thief may have used decoding technology to crack the password, but Midosi suggested that the thief may not have entered the exhibition hall, but instead posted sticky notes inside the door in other ways. Ouyang Yanyan appeared and explained his reason for being here. He and the police suspected that the security guard was stealing, but Midosi questioned this hypothesis through the continuous nature of the surveillance video, because if the security guard really committed the crime, it should be reflected in the surveillance video. Cui Zheng realized that there was no footage of security guards committing crimes in the surveillance footage, which contradicted their previous assumptions and made the truth of the case even more confusing.