Police Detective

The problem is, due to confidentiality regulations, the leader of the institute only said last night that the task force was seconded, and nothing else was said. Therefore, no one understood what the case was and what the status of the secondment was.

But Wang Liang knows it! He had just experienced the scene a few days ago, and there was no announcement of the solution of this case in the past two days. If there is any case that requires a special task force, it must be this one. Thinking of the conditions at the scene, Wang Liang didn't want to go, so he made a bet with Li Han, who he had a good relationship with.

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 have a look, so it was Li Han who came.

Well, Wang Liang’s level is high enough.

Too lazy to trouble Wang Liang, Bai Song and Li Han talked about something else.

Li Han is a man with deep patriotism, which is mainly reflected in his obsession with the history of the Qin Dynasty to the Five Dynasties and Ten Kingdoms. Bai Song happens to have done some research on the history of the Song Dynasty. In addition to talking about this case along the way, he also talked about history.

History is something that no one can underestimate. For example, "The Collection of Cleansing of Wrongs" written by Song Ci during the Southern Song Dynasty, although it is very old and not very scientific in some places, it is still worth learning. When Bai Song was a sophomore, he chose this book for his elective course on ancient language and literature.

Among them, there is a record in Volume 4-25 of "The Collection of Cleansing Wrongdoes": "If the skin and flesh under the neck are rolled up and the shoulders are not shrugged, it means it was cut off during life; if the skin and flesh are not rolled up and the shoulders are not shrugged, it is a sign of death. Then cut him into pieces." For this case, it can be used to prove that the dismemberment of the body was carried out after the death of the victim.

After running around outside for a day, Li Han and Bai Song found seven or eight shops that had grinders, took samples of more than 20 grinders, and had some dinner. It was already seven o'clock in the evening when they returned to the unit. Li Han didn't live in the unit and drove home by himself, while Bai Song lived directly in the criminal police team.

After sampling more than 20 samples in one day, Bai Song was very pessimistic because he gradually felt that the composition of the more than 20 samples taken today would not be any different.

Back in the dormitory, Bai Song was surprised that Sun Jie was in the same dormitory as him and didn't leave either.

"Brother Jie? Why didn't you leave?" Bai Song glanced at Sun Jie who was sorting out a lot of materials.

It didn't matter. Bai Song almost stared out of his eyes.

What Sun Jie is sorting out is a set of reports. The report here includes extensive color on-site photos. And these photos

Bai Song just glanced at it and couldn't hold it any longer. The bit of food he just ate hit his throat in an instant. Bai Song pinched himself forcefully, suppressed it, and then turned his head away from looking at Sun Jie.

Sun Jie couldn't help but laugh. Seeing that Bai Song, who was originally excited, ended up like this after looking at a few pictures, he couldn't help but joke: "What are you afraid of? It's not like you haven't seen what the scene looks like."

"No, Brother Sun, Brother Jie! I am convinced that you are awesome, I absolutely admire you. My skills are too shallow, so I am willing to be inferior."

This was not the time to show off one's abilities. Bai Song suddenly understood why Wang Liang didn't want to come.

"It's okay. I spit it out when I can't stand it. You'll get used to it after vomiting a few times. When I was in school, the first time I met the physical education teacher, the students in our class couldn't control themselves. Now, it's just normal. That's it." Sun Jie said nonchalantly, sorting out the case files as he spoke.

"It's okay, I'm much better." Bai Song took out his water glass from the backpack on the bed. He made some tea in the morning and before he had time to drink it, it was almost cold now. He drank 500ml of tea in one gulp.

The bitter tea made most of the nausea in his throat disappear. Bai Song understood that there are some things in this world that you will definitely face once you choose.

Thinking of this, Bai Song looked at the photos again. Although he was still extremely sick, he was much better.

"Okay, come over and help me sort out the case file when you feel better. I'm also single. I won't be going home tonight. After finishing all these things, I should report to the leader tomorrow." Sun Jie said.

Bai Song said hello and helped Sun Jie. In fact, it wasn't much work, just binding. The two of them worked together and finished it in ten minutes. During this period, Bai Song, who had seen various photos several times, gradually started to get used to it.

"Brother Jie, I see this incision is really smooth, isn't it?" Bai Song asked while holding back his nausea.

"Well, you are right. Several comrades in the city and I have also seen this problem. We speculate that this cutting machine has a strong cutting ability, and the damage to the connection is relatively small. For this, we speculate This should have been done by a skilled worker," Sun Jie said.

"You mean, the murderer is a door and window installer?" Bai Song said.

"We can't rule out this possibility." Sun Jie finished and stretched: "I've been busy all day and am exhausted. I have to take a shower and go to bed soon. Do you want to read this volume? If you want to read it, just take it and read it. , if you don’t look at it, I will lock it up.” Because everyone is a task force, Sun Jie did not shy away from it.

"Look, Brother Sun, please do your work first. I'll just look at it in this room. Nothing can be lost."

After speaking, Bai Song opened the case file.

This is not the entire case file, but just a case file made by the forensic doctor and the criminal police who investigated the scene. Bai Song tried to avoid those photos and read some reports instead.

The composition of the gravel extracted on site is very complex because it has been mixed with river sand and silt. The Tianhua University laboratory used a variety of experimental methods to prove that the amounts of various elements in it are inconsistent with river sand.

There are only inferences, not conclusions.

It is currently inferred that it contains silicon carbide.

Silicon carbide also exists in nature, which is what we often say can look like real moissanite with diamonds. However, industrially low-purity silicon carbide is often prepared in abrasives.

According to this clue, silicon carbide is also called emery in industry. In terms of the definition of grinding wheel, there is a special model called GC (green silicon carbide abrasive) or C (black silicon carbide abrasive), but there are still two types. a question. First, these two abrasives are the most commonly used abrasives. Second, the ingredients of several corundum abrasives were actually found in the experimental report, which gave everyone a headache.

Bai Song looked at the scroll for a long time. Sun Jie couldn't stand it anymore. "Let's talk tomorrow. I'm older than you. I can't stand it anymore. Give me the scroll. I have to lock it up."

Sun Jie was as meticulous as ever. He wouldn't sleep well if he didn't put these things in the safe. Bai Song naturally understood, so he handed over all the things, washed himself, prepared the bedding, and lay down. Ready to rest.