Chapter 141: Surveillance Song Changfeng glanced around the room and was pleased to see that the expressions on everyone's faces matched exactly what he had imagined when he first formed his theory. It seemed they had all come to the same conclusion. That's right. In this serial theft case, aside from the thief, there was another beneficiary: the vendor selling surveillance equipment. Earlier today, while reviewing surveillance footage in the Technical Department, Song Changfeng repeatedly noticed…