Sang Yan was stunned . " You mean, during the fire at your school, someone locked the door from outside?"

"But I remember the police investigated and they said that the door could not be opened because of a malfunction of the combination lock, right?"

The fire that year was very tragic. It burned down the home of some students who were doing research in the institute, including several who were seriously injured. Among them were Qin Xiao and Ou Jiaying, who had half of her ...