Qiao Guang had been brewing emotions for a long time, and when Xiao Geyan asked him this, he was immediately deflated, and his thoughts were completely pulled away by the serious things he had just dealt with before, and he forgot all the grievances.

"yes, it's over, and the result is that this person must have watched too much TV or movies. Qiao Guang shrugged, "In the surveillance video you saved back at the time, the video screen will be white for a short time, and then it will be restored, right? That person's original intention should be to imitate the kind of infrared photography that will appear in some movies and TV series, and the camera will break when you shine a photo." But it's not that easy to do, infrared can really destroy the camera, but that requires a very high-powered infrared emitter, and if it succeeds, it will cause actual damage to the camera, not just interfere with the shooting for a while. ”

"What do you mean...... That person's purpose wasn't to temporarily interfere with the camera?, but to think that doing so would cause permanent damage to the camera?" Bai Xue was a little surprised, this was something she didn't expect, "I thought this was a very cunning move, could it be that the murderer was stupid?"

"It's not enough to say that you are stupid, after all, it's good to think of this trick, but it's just not enough to be smart. Qiao Guang waved his hand, "At the beginning, I also doubted that this person just wanted to interfere with the camera for a short time, but considering that this person should have been to facilitate the transportation of Sun Qiwen's body at that time, how likely do you think this person is, while carrying the corpse, he can also free up one hand to accurately point at the surveillance camera for shooting during the movement?"

Bai Xue thought about it, and felt that it would indeed be more difficult to implement, after all, Sun Qiwen was not a petite character, after being made into a human specimen, it was even more stiff, and it was really not an easy task to carry it, even if it was a more labor-saving means of transportation.

"And I've also done a test, the infrared emission position of the interference camera is always fixed, and it has not moved until it loses interference, which is more certain of my previous speculation, the person must have secretly put the equipment somewhere, irradiated the camera, and then left, but then I don't know whether the equipment placed was taken away, or broken, or accidentally touched and caused displacement, which is possible, in short, the interference is removed, and the surveillance camera will return to normal working state。 ”

"If the other party really thinks that this will destroy the camera completely, then it will be a good thing for you. Xiao Geyan listened for a while, and then said to Bai Xue, "Since the other party doesn't know that the camera has not been permanently destroyed, it won't be taken care of when it comes out, and it will leave with a swagger, so that we can judge it according to the follow-up surveillance video." It is impossible for that person to transport Xiao Geyan's body by carrying it alive, it should be with the help of tools, which is a reference point. ”

Bai Xue understood what he meant, and immediately felt a lot more energetic, after all, this discovery is very important, at least you can lock the scope of the suspects, and then investigate them one by one, otherwise this incident happened very secretively, no one has found it after so long, and it is difficult to lock the suspect through eyewitnesses or trace clues, but with this harvest, you can further clarify whether there are any suspected crimes among the people who have been in and out of the autopsy building that day.

"Great! I'll go and adjust the follow-up surveillance video tomorrow!" Bai Xue rubbed his hands.

"It's not you, it's us. Xiao Geyan opened his mouth to correct her.

Bai Xue nodded, since Xiao Geyan was so insistent, she didn't want to pretend to push back, and she also felt that in such a case where it was not easy to collect clues, with Xiao Geyan with her, she seemed to be more down-to-earth in her heart, and she felt more confident.

Because the three of them didn't come back early from their busy work today, after eating and chatting for a while about the problem of infrared interference with the camera, the time was already close to midnight, they stopped the topic, went to wash, and went back to the room to rest, so as to recharge their energy and cope with the next day's work.

Of course, this does not include Qiao Guang. Bai Xue has Xiao Geyan personally accompanying him, he can naturally be honorably laid off, and the problem of infrared equipment has been solved, so he is satisfied with headphones on his head, and opens the computer to play the game heartily, I don't know what time it is, anyway, when Xiao Geyan and Bai Xue set off the next day, he still fell asleep with the door closed.

When the two of them drove to the medical school, just after work time, the two of them found the security office familiarly, and stored the follow-up surveillance video of that day, but there was a signal from Xiao Geyan, so they didn't play it out at the security office. The reason is very simple, there must be more than one murderer who entered and exited the autopsy building that day, so they came with suspicion, and the people in the security department also saw it, and everyone who appeared in the surveillance video turned into a suspect in their eyes, which would have an impact on many people who were originally unrelated.

Bai Xue and Xiao Geyan are more worried about another problem, that is, if the people in the security department have made any suspicions or guesses, and they accidentally alarm the real murderer, it will be more than worth the loss.

The two of them didn't stay much after storing the surveillance footage, they were about to leave, and when they left, they met Qin Liang near the school gate, Qin Liang saw Bai Xue from afar and came over to greet her very enthusiastically, and saw Xiao Geyan just nodded politely and detachedly.

Bai Xue and Qin Liang really didn't have anything to say, and she didn't quite understand why she was a little reluctant to be such a person before, but today she saw that she would behave so enthusiastically, even with a bit of flattery, which really made her a little uncomfortable.

And in the process of greeting her and Qin Liang, Yao Ziqiang also appeared in their line of sight, but he didn't get closer, but chose the opposite way to Qin Liang - bypassing and leaving.

Yao Ziqiang walked around, unwilling to meet them, which in itself was nothing serious, but others did not approach, but their eyes kept looking at this side, and that feeling was very awkward.