The problem is, due to confidentiality regulations, the leader of the institute only said last night that it was a secondment for the special task force, and said nothing else, so no one knew what the case was or what the secondment situation was.
But Wang Liang knew it! He had just experienced the scene a few days ago, and there was no announcement of the case being solved in the past two days. If there was any case that needed a special task force, it must be this one. Thinking of the situation at the scene, Wang Liang didn't want to go, so he made a bet with Li Han, who had a good relationship with him.
Facts have proved that information asymmetry is unfair, so Li Han naturally lost. In addition, Li Han really wanted to come to the task force to take a look, so Li Han was the one who came.
Well, Wang Liang’s level is high enough.
Too lazy to spoil Wang Liang's show, Bai Song and Li Han started talking about other things.
Li Han is a person with deep patriotic feelings, which is mainly reflected in his obsession with the history from the Qin Dynasty to the Five Dynasties and Ten Kingdoms. Bai Song happens to have some research on the history of the Song Dynasty. Along the way, apart from talking about this case, they also talked about history.
History is something that no one can underestimate. For example, the "Xiyuan Jilu" written by Song Ci in the Southern Song Dynasty, although it is very old and not so scientific in some places, is still worth learning. Bai Song chose this book as an elective course in ancient language and literature in his sophomore year.
Among them, Volume 4, Chapter 25 of "Xi Yuan Ji Lu" has a record: "If the skin and flesh under the neck are rolled up and bulged, and the skin on the shoulders is raised, it was chopped off before death; if the skin and flesh are not rolled up and bulged, and the shoulders are not raised, it was chopped off after death." For this case, it can be used to prove that the dismemberment in this case was carried out after the victim's death.
After running around all day, Li Han and Bai Song found seven or eight shops that sold grinding machines, took samples from more than twenty grinding machines, had a quick dinner, and returned to the office at 7 p.m. Li Han did not live at the office, but drove home by himself, while Bai Song lived directly at the Criminal Police Team.
After taking more than twenty samples in one day, Bai Song was not optimistic because he gradually felt that the composition of the more than 20 samples taken today would not be any different.
When Bai Song returned to the dormitory, he was surprised to find that Sun Jie was also in the same dormitory with him and had not left either.
"Brother Jie? Why didn't you leave?" Bai Song glanced at Sun Jie who was sorting a pile of materials.
It didn't matter what he saw, Bai Song almost popped his eyes out.
Sun Jie was compiling a set of reports. The reports included a large number of color photos of the real scene. And these photos...
Bai Song just took a look and couldn't hold it anymore. The food he had just eaten instantly came to his throat. Bai Song pinched himself to suppress it, then turned his head and stopped looking at Sun Jie.
Sun Jie couldn't help but laugh. Seeing Bai Song, who was originally excited, become like this after looking at a few pictures, he couldn't help but tease him: "What are you afraid of? It's not like you haven't seen what the scene is like before."
"No, Brother Sun, Brother Jie! You are so powerful, I admire you. I am too incompetent, I have to admit defeat."
This is not the time to show off one's abilities. Bai Song suddenly understood why Wang Liang didn't want to come.
"It's okay, just spit it out if you can't stand it. You'll get used to it after a few times. When I was in school, I saw the cadaver teacher for the first time and my classmates couldn't control themselves. Now, we're just indifferent." Sun Jie said nonchalantly while sorting out the case files.
"It's okay, I'm much better now." Bai Song took out his own water cup from **'s backpack. He had made some tea in the morning but hadn't had time to drink it yet. It was almost cold now, so he drank 500ml of tea in one gulp.
The bitter tea mostly eliminated the nausea in his throat. Bai Song understood that in this world, there are some things that you will have to face once you make a choice.
Thinking of this, Bai Song looked at the photos again. Although he still felt extremely disgusted, he felt much better.
"Okay, come over when you feel better and help me organize the case files. I'm a single guy and I'm not going home tonight. Finish all these things. I have to report to my leader tomorrow." Sun Jie said.
Bai Song said yes and started to help Sun Jie. Actually, it wasn't much work, just binding. The two of them worked together and finished it in just over ten minutes. During this time, Bai Song, who had seen various photos several times, gradually got used to it.
"Brother Jie, this incision looks so smooth," Bai Song asked, suppressing his nausea.
"Yes, you are right. I and several comrades in the city have also noticed this problem. We speculate that this cutting machine has a strong cutting ability, and the damage to the joints is relatively small. For this, we speculate that it should have been done by a skilled worker." Sun Jie said.
"You mean, the murderer is a door and window installer?" Bai Song said.
"Don't rule out this possibility." After Sun Jie finished, he stretched and said, "I've been busy all day and I'm exhausted. I have to take a shower and go to bed soon. Do you want to see this scroll? If you want to see it, just take it and read it. If not, I'll lock it up." Since everyone was on a special task force, Sun Jie didn't shy away from it.
“Look, Brother Sun, you go ahead and do your work. I’ll just watch in this room. Things won’t get lost.”
After saying that, Bai Song opened the case file.
This is not the complete case file, but only the case file made by the forensic doctor and the criminal police who investigated the scene. Bai Song tried his best to avoid the photos and instead read some reports.
The composition of the gravel extracted on site is very complex because river sand and silt have been mixed in. The Tianhua University laboratory used a variety of experimental methods to prove that the amount of various elements in it does not match that of river sand.
There are only inferences at present, not conclusions.
It is currently inferred that it contains silicon carbide.
Silicon carbide also exists in nature, which is what we often call moissanite, which is indistinguishable from diamond. However, low-purity silicon carbide in industry is often used to make abrasives.
According to this clue, silicon carbide is also called corundum in industry. In the definition of grinding wheels, there are special models, called GC (green silicon carbide abrasive) or C (black silicon carbide abrasive), but there are still two problems. First, these two abrasives are the most commonly used abrasives, and second, the experimental report actually found the composition of several corundum abrasives, which made everyone a little headache.
Bai Song looked at the scroll for a long time, and Sun Jie couldn't stand it anymore. "Let's talk about it tomorrow. I'm old and I'm not as good as you young people. I can't stand it anymore. Give me the scroll, I have to lock it up."
Sun Jie was as meticulous as ever. He would not sleep well unless he put these things in the safe. Bai Song naturally understood, so he handed over all the things, washed up, prepared the bedding, and lay down to rest.
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