Xun Mu's eyes also turned over: "Old Wei, you tell me in detail." ”

"The main conclusions are drawn from the analysis of various traces such as footprints." Lao Wei pushed the glasses on the bridge of his nose and said: "You don't like to hear the specific analysis process, I'll just put the restored 3D animation picture, who will help me plug in this USB flash drive?" ”

"I'll come." Qi Yuan immediately raised his hand, then stood up and walked to him, took the USB flash drive and immediately ran to the side of the multimedia equipment, inserted the USB flash drive into it, and then opened the folder, found the video file, and opened it for playback.

Lao Wei explained at the same time, saying: "Probably this is the case, one of the two colleagues, Cao Mingyang and Chu Xunliang, passed through the first scene - of course, it is also possible that they were lured over, because this location is relatively remote, and there are no surveillance cameras nearby."

At that moment, a suspect came over, and the two of them stood in this position and chatted for a while, and I speculated that the suspect was lying about something or something.

The two of them then walked out, and when they reached the corner, another man burst out and quickly restrained him, perhaps with ether-soaked cotton cloth, or some other similar means, the exact details of which are not certain, but in any case, he quickly passed out, and there was no way to call out during the process.

After that, the perpetrator took off all the equipment from him, threw the useless ones that might have a positioning device into a nearby trash can, and left the useful ones, and then put the man in the car, and then stripped his clothes and threw them away.

Followed by another person, of course, it is also very likely that they were lured over, but I don't know why, they didn't plan to do the same this time, or maybe the rest of this 'he' was more alert and not fooled.

In any case, someone was approaching him from behind, and then hit him on the head with a blunt object such as a club. He should have reacted, and turned around in an instant—this could be clearly seen from our restored footprints—but he didn't dodge, and was taking a hit.

After that, he lost his balance, and the long footprints that Xiao Qi found at the scene kicked out in this way. It's just that he didn't fall to the ground, and he was held up, followed by another person who lifted his feet and carried him away, and then also stripped him of all the equipment.

In the end, because there was some blood on the ground, they roughly rinsed it, not with a basin, I estimate that it was with mineral water, large bottles, estimated to be 4 liters of size, and the focus of the cleanup was on blood stains rather than footprints, so although the scene was destroyed, it was only partially damaged, and many clues remained.

After doing this, the criminals took Cao Mingyang and Chu Xunliang away. We can't estimate how long the whole process lasted and how long the time interval between the two people were charged one after another, but it shouldn't be too long.

Listening to the meaning of other colleagues, Cao Mingyang and Chu Xunliang should have disappeared at about half past ten, and after the disappearance, they still need to be transferred to the second scene, that is, the scene of the killing, injury and video recording, the distance between the two places is not far, but it also takes time.

The video was released at about half past twelve at the earliest, and I heard from my colleagues in the Graphic Investigation Department that there were traces of simple and rough editing, and they may have watched it themselves during the period, so it may have been recorded at twelve o'clock or even earlier, around half past eleven.

From 10:30 to 11:30...... Even if it's twelve o'clock, this interval is already too short, so the time for the criminals to kidnap Cao Mingyang and Chu Xunliang successively is not enough, on the contrary, they are very nervous. ”

As soon as Lao Wei's voice fell, the video was just finished.

Xun Mu beckoned Qi Yuan to put it aside again.

After releasing it again, Su Ping retracted his gaze, fell on the case file again, flipped through it again, and then said: "The video is very intuitive and comprehensive, and it is not easy to do this step." Was there any blood extracted at the scene? ”

"I tried extracting it, but it's hard to say if I could separate the blood." Lao Wei shook his head, looked at Yan Zhongxin, and said with a smile: "The future work depends on Director Yan." ”

"Well, I've heard that I've received a few samples." "After the meeting is over, I will see if I can extract the blood cells by evaporation, centrifugation, etc., and if so, I can detect DNA from it, and then I can determine who was violently attacked," said Yan Zhongxin. But are you sure it was the violent attack that came after? ”

"Sure." Old Wei bowed.

"There's one more clue." Su Ping whispered, "Mineral water." Lao Wei, what is the basis for your conclusion? ”

"The footprints are analyzed to estimate the direction and magnitude of the water flow, and the outflow velocity and caliber are further analyzed." Lao Wei immediately answered: "The impact of the water flow is relatively weak, but it is still much stronger than ordinary beverage bottles and mineral water bottles. ”

After a pause, he continued: "We have determined the direct impact point of the water flow, and after analyzing the direct impact point, we have determined that the water flow has been subjected to a horizontal initial velocity facing away from the garbage pool, and the dumping height should be about sixty centimeters.

Then we carried out a large number of experimental simulations, and finally determined that the radius of the bottle mouth of the water container is slightly larger than that of common beverage bottles and mineral water bottles, about one-third larger.

After further comparing the various spelling bottles on the market, it was finally determined that it was likely to be a 4-liter beverage bottle, which was a bit sweet.

Of course, the caliber of the five-liter specification seems to be the same, but the reason why the four-liter specification was finally determined was that we found this mineral water bottle in the garbage pool, and there was still a small amount of water residue in it, about twenty or thirty milliliters, but unfortunately there were no fingerprints on it, and the perpetrator was obviously wearing gloves. ”

As he spoke, he stepped aside, took a pose, and said, "According to the results of the gait analysis we did, he was in this posture at that time, bending over, holding the ear on the mouth of the bottle with his left hand, and holding the bottom of the bottle with his right hand, and poured and washed for a while, and the bucket of water was washed out, and then left." ”

Xun Mu touched his chin: "So, where did this bottle of water come from?" Comes your own? Still is...... Bought it from a nearby convenience store? ”

"Team Xun, it's still early, I'll immediately go to the convenience store near the crime scene to ask." Wang Zhao immediately stood up and said, "Ask anyone if anyone has bought this specification of mineral water between ten and twelve o'clock in the morning, and by the way, bring back the monitoring handcuffs." ”

"Okay." Xun Mu bowed his head and said, "Let's go, go and come back quickly, and call to report as soon as you find out." ”

"Yes!" Wang Zhao saluted, then looked left and right, and asked, "Who is with me?" ”

Qi Yuan raised his hand again: "Brother Wang, I'll go with you." ”

"Four more." Su Ping said: "Two people in a group, three groups act together, which is more efficient." ”