Wang Yahong was even more nervous, she couldn't hold it anymore, and her legs began to tremble involuntarily.

Just when everyone thought that Tang Tao would continue to bite Wang Yahong, he asked Zong Lei a seemingly unrelated question.

"Has the hospital hired a plumber this year? Have you ever disassembled or assembled it? ”

Zong Lei thought for a while and said: "Yes, the office building of the hospital has been renovated since April, and there are often people working on it, but it has ended in June, what's wrong?" ”

"It's close to the intensive care area, right?"

"Yes, just behind the critical care area."

Tang Tao nodded with satisfaction, took out the video again, and handed it to Li Xiao.

"Amplify the sound."

Li Xiao complied, constantly amplifying the background sound, and Zhang Zhang immediately pricked up his ears.

The waveform on the computer screen kept jumping as the sound went up, and a somewhat vague sound reached Zhang Li's ears.

"Electric hammers, someone is using electric hammers." Zhang Zhang said categorically.

"That's right, it's an electric hammer, which means that this video was filmed in June at the latest, isn't it interesting that a video shot in June was saved for October? Nurse Wang, after Jiang Xiaoyu's disappearance, Dean Wu's first thought was you, right? ”

Tang Tao's attention moved to Wang Yahong again.

"Yes, I was indeed the first to be suspected, Section Chief Luo also went to my house to search, if I did it, they would have found out a long time ago, even the intersection behind the trail is monitored, I think Section Chief Luo also checked." Wang Yahong took a deep breath, and her tone changed again.

Tang Tao snorted coldly and said with a smile: "Your hands were on your knees at the beginning, and you kept rubbing, which was a manifestation of your nervousness, but at this moment, your hands were crossed and pinched together, and your strength was great, your skin turned white, your tone changed, and your eyes were much firmer, which shows that you have recovered from the tension just now, and you have found a way to fight back, that is what everyone calls a haunted incident, simply put, it is the evaporation of the river fish under the monitoring, do you think it is impossible for us to solve this puzzle?" Is the video really okay? ”

"No problem!" Zong Lei rushed to answer again.

"Did I ask you? You seem to be in a more anxious hurry than her, huh? I didn't ask you at all, but you rushed to answer, do you know what it's called? You must be confident in your computer skills, right? ”

Tang Tao smashed over with a few questions, and Zong Lei was a little caught off guard.

Li Xiao on the side turned on the surveillance video again, Tang Tao's words gave him a wake-up call, he had been thinking about how Jiang Xiaoyu escaped the surveillance, he also went to check the camera, everything is normal, but what if the video is fake? What if someone has tampered with the surveillance video?

"I see!" Li Xiao felt that he was a stupid dog, thinking about things too complicated, and he had done this kind of trick that made people disappear out of thin air.

The principle is very simple, first of all, it is to record a video, and then edit and stitch according to your own requirements.

If that's the case, then the video must have traces of being edited.

Li Xiao imported the video into the software,Analyze frame by frame,Soon the results came out,The surveillance video is missing one frame at about 3:50 in the morning,That's from here the video is divided into two parts,If it's an ordinary person, I'm afraid it will take several days,But Li Xiao only took less than two minutes to get it。

He turned the computer and stopped the time at the moment of frame drawing, beads of sweat rolled down Zong Lei's face, and the deception he designed was exposed.

Li Xiao said excitedly: "I'll explain to you, the murderer, it's just our Mr. Zong Lei, he really worked hard, in order to fake a few G video materials, he didn't hesitate to copy a few G video materials, after copying the video, he calculated the time to cut it off from 3:50 in the morning on the day of the crime, and then imported into the monitoring system before this time, this is like watching a movie, I think you must be on duty that day, right?" So don't talk about Jiang Xiaoyu, even if a force is monitored, no one found it, so Jiang Xiaoyu disappeared, swaggered and was rescued, he resumed monitoring at 3:50 in the morning, although his movements were very fast, and the calculation was very accurate, but there was still one frame missing in it, in fact, your means were not clever, but I made a mistake in the direction of the investigation at the beginning. ”

"You mean that that night's video is actually a video from the previous day or more?" Sophie asked.

"That's right, that's it, cover the surveillance screen with a video to make a video, and then connect the camera to shoot the picture, this is the real secret of Jiang Xiaoyu's evaporation in the world."

Zong Lei shook his teeth and said with a wry smile: "It was indeed me who was on duty that day, I was just a prank, this is also a crime?" Why would I do this if you say so much? What about the little fishman? If you can't find anyone, it's useless for you to say anything, do you have evidence? ”

"Hahaha, okay, that's what I'm waiting for." Tang Tao clapped his hands and said with a smile: "Don't you know why you did this?" Remember the question I just asked you? I asked you if you have someone you like, you hesitated, in fact, you have, but you are willing to say, this person is Jiang Xiaoyu, you are in charge of the hospital's computer technology, you have been in front of the camera for a long time, no one knows her better than you, her every move is under your nose, you have been secretly in love with her, and you have also discovered the secret of her and Nurse Wang. ”

"What's the secret? I don't understand. Zong Lei said very disdainfully, but he turned his head weakly.

"Actually, Jiang Xiaoyu is not crazy at all, she has been acting, Duan Tao and the Second Hospital are too ruthless to her, Nurse Wang really can't stand it, so she has compassion, she moved her hands and feet when she injected Jiang Xiaoyu with drugs, in order to survive Jiang Xiaoyu had to pretend to be crazy and stupid, but even so, she wanted to escape from the hospital several times, after you found out their secret, you found Nurse Wang, Nurse Wang had to have a showdown with you, I hope you can save Jiang Xiaoyu for the sake of your fellow countrymen, You like her, so naturally you agreed without hesitation, Duan Tao intensified again and again, making you realize that if you didn't save Jiang Xiaoyu, she would be tortured to death sooner or later, so such a prison escape plan was born. ”

With Tang Tao's explanation, Wang Yahong's tears slowly fell, and she turned her head sideways and sobbed in a low voice.

Tang Tao continued: "You know how to escape the eyes of the surveillance, but there is a problem here, that is, how to escape afterwards, your plan can only be carried out at night when there are few people, and the next morning when the nurses inspect will definitely find out, I asked the nurses, their inspection time is basically over at twelve o'clock, and they have to go to work at eight o'clock in the morning, which means that there are only eight hours left for you, after the accident, Wang Yahong will inevitably become the primary target of suspicion, and Section Chief Luo will inevitably search her home, Investigate her social circle, and look everywhere for your only secret exit, but someone has to answer to this plan at night, so there is a risk of exposure, and if you miss it, you will all be doomed. ”

"You said so many people, what about people? Where are the people? Zong Lei interrupted Tang Tao's words and said.

"People are in the hospital, and they never leave, because the most dangerous place is the safest!" Tang Tao said categorically.