Immediately, Wei Xiu clicked on the computer at hand, paused the screen for a moment, pointed to one of the figures and said, "If I guess correctly, the suspect should be this person." Just entered the school, this video is clear, blue t-shirt, cropped shorts. ”

After speaking, Wei Xiu turned to another computer, clicked on the computer again, and paused again at a certain moment: "This video can only see half of the sideways, and it can be distinguished from the clothes that it is him, this is in front of the men's dormitory......"

"This one is still sideways, sitting in the shade of a tree watching a basketball game, and the surveillance is blocked by the leaves, so I can't see it clearly. ”

“…… Note that this is a canteen ingredient ration truck. He came over, it seemed that he was just passing by normally, but ......" Wei Xiu's tone became serious, and he fixed the picture at a certain moment, enlarged the picture and said: "Look at his hand ......"

On the enlarged picture, the image has become extremely blurry, showing pixels of various color blocks, but if you look closely, you can still see that his hand has touched a bag.

"Is this the video of September 12th?" Qi Shengtian was keenly aware of a key point and asked.

Wei Xiu said with a serious face: "That's right, it's indeed the video on September 12th, that is, the day the school held a freshman celebration party." In fact, there is a little mistake in the direction of everyone's investigation, because food poisoning occurred at breakfast on the 13th, so the time of the investigation is mainly focused on this period, but in fact, although the canteen will deliver food every day, but in fact, for some foods that can be stored for a long time, they will be sent in advance, such as this black rice. ”

"But if you poison the ingredients, won't the canteen wash the rice? I think this program will at least wash away most of the toxins, but judging from the situation of the victims, everyone is quite poisoned, I'm afraid it's hard to prove this, right? If you include all the people who have come into contact with the ingredients, I'm afraid this amount of investigation is too large. An old detective asked with a serious expression.

Wei Xiu was not angry at the old criminal policeman's questioning, this can only mean that the old criminal police are rigorous, this is the people's good policeman!

Wei Xiu said indifferently: "This question is well asked, to answer this question, I must explain some of the chemical properties of Atu sulfide! Atuo sulfide, a black crystal, is insoluble in water and alkali, but soluble in acid, and forms sulfate lump when oxidized at high temperatures. ”

Speaking of this, Wei Xiu's eyes suddenly sharpened, and he looked at everyone: "Because it is a black crystal, it is extremely difficult to detect when mixed in black rice, and because it is insoluble in water, it is also difficult to be washed and melted." And what was detected in the victim's body was the sulfate lump after the high-temperature oxidation of the sulfide mound! Based on these points, poisoning the ingredients is more convenient and secretive than directly poisoning the pot!"

As soon as Wei Xiu's words came out, everyone was shocked. In fact, Wei Xiu still has one sentence to say, that is, he knows the person who committed the crime, or that he has a grudge with the person who committed the crime.

It's just that Wei Xiu didn't expect that that little grudge at the beginning would make him take such a risk, was it a temptation? Or was it hatred in his heart?

Wei Xiu didn't know, and he didn't want to know. Now catching him and clearing him of suspicion with his friends is the key.

"Arrest people first, catch a few more people, confuse the line of sight, and would rather kill by mistake than let go!!" Qi Shengtian suddenly roared with a 'full of arrogance'.

In fact, Qi Shengtian's wisdom can be seen at this time, and arresting a few more people can prove that the police are not targeting a certain person, but conducting a collective investigation, and even if it is a mistake at that time, it can be interpreted as the police investigating and collecting evidence.

If you get it right...... At that time, no one will be pulling Qi Shengtian's pigtails to catch the wrong person!

Because of Qi Shengtian's words, the task force immediately studied and took action.

At this time, Wei Xiu and Wang Qi became redundant, and after the two of them were embarrassed a few times, they were invited out.

"I have long heard that Brother Wei is not only proficient in antiques, but also proficient in pharmacology, and when I saw it today, it really deserved its reputation!" Wang Qiwen said in a crepe manner.

Wei Xiu rolled his eyes, probably because this matter was finally going to be settled, Wei Xiu was in a much better mood, and joked: "Yes, I am not only proficient in pharmacology but also proficient in physiognomy, I see that Brother Wang's face is ruddy, and Yintang is shining, this is a happy event?"

Wang Qi laughed, patted Wei Xiu's shoulder and sighed, "I really guessed it right for you!"

After speaking, Wang Qi took out a pack of Yuxi and handed Wei Xiu a cigarette, and personally lit it for Wei Xiu: "The boss received a call from Jingli before, and after hanging up the phone, I saw that the boss had a good face, so I came over to take a look, but I didn't expect that there would be a major breakthrough just now, this is not a happy event, what is a happy event?"

Wei Xiu was dumbfounded when he heard this, it turned out that Wang Qi's joy came from the master behind him, Yu Zheng!

"Okay, I have to report this news to the boss quickly, and next time we have a drink. Wang Qi casually extinguished the cigarette he had only smoked.

"Well, good. Wei Xiu smiled and nodded.

Wang Qi waved his hand and was about to leave, when he suddenly remembered something and turned his head and said, "By the way, how did you taste the sulfate in that person's blood? I heard that in Japan, you also used the method of tasting blood to taste that the person who committed suicide by cutting his abdomen was locally anesthetized." It can't be some superpower, right?"

When Wei Xiu heard this, he blinked his eyes and said mysteriously: "Li Shizhen tasted the book "Compendium of Materia Medica", maybe I can also publish a "Compendium of Materia Medica". After speaking, Wei Xiu waved his hand instead, turned around and left one step ahead of schedule.

Wang Qi was stunned when he heard this, looked at Wei Xiu's back, suddenly grinned for a while, shook his head, and left.

Just like last time in Japan, Wei Xiu doesn't actually need to taste blood, and he can use the explorer's microprobe function to parse the poison in the poisoning student's words.

However, Wei Xiu unexpectedly tasted blood in the end!

Regarding this, Wei Xiu actually figured out one thing.

Just like the time he tasted blood in Japan, he was not surprised by too many people, many people just thought that he was deliberately mysterious, like the act of reciting Buddhist scriptures before tasting blood.

In the same way, the physiological manifestations of lump poisoning are very complex, but in fact, they are also obvious. The reason for the misdiagnosis is that this metal is regulated, and few people are poisoned by it, so naturally few doctors think of this, which causes misdiagnosis.

Therefore, Wei Xiu can find the poisoning, and it is easy to think that it has been guessed from the patient's physiological characteristics a long time ago.

However, I think that when someone with a heart discovers that Wei Xiu can taste blood and taste compounds again and again, he will eventually mumble in his heart, and eventually there will be a sense of unknown that is difficult to control, because of the unknown, so mysterious, because of mystery, so fearful.

By doing this, Wei Xiu is shaping his personal deterrent! After all, violent means are only inferior means!

On the fourth day of the Nanda canteen poisoning case, the police officially announced that the case had been solved. The case of canteen poisoning was eventually determined to be artificially poisoned. The suspect Xia Moumou was psychologically unbalanced because of his jealousy of the canteen contractor, and finally committed a felony, and the police finally classified the case as a criminal case, and the final result still needs to be tried by the court.

The NTU food poisoning case turned into a poisoning case, and this result was unexpected by the public, and it is reasonable to think about it carefully.

In view of the social concern of this case, the whole process of this case is transparent and subject to the supervision of the whole society, and the clues and evidence to solve the case are also released. The speed with which this case was solved was superb, and it was well received by the whole society, which greatly enhanced the credibility of the Qinghe City police.

Just as boiling water will always cool down and dust will always fall, the news of the poisoning case will be under the control of the relevant leaders, and after experiencing a climax, it will slowly float down like a feather, without the slightest splash or sound.

Just when the news heat gradually cooled, Wei Xiu knew that it was his turn to settle the ledger.

However, at this moment, Wei Xiu's parents suddenly called, saying that they had arrived in Qinghe City.

When Wei Xiu heard this, he was stunned.

Why did the second elder come to Qinghe City? They rarely even went to the county seat before, so how could they think of running to Qinghe City to look for him? Could it be because the case had already spread to their hometown and was known to the second elder?

Wei Xiu thought about it, and nervously drove Babos to the long-distance bus station to pick up people.

When he was far away, Wei Xiu saw the second child standing in front of the gate of the long-distance bus station with a huge snakeskin bag, but just by seeing that look, Wei Xiu's nose was sour, and he almost shed tears.

The mother is not worried, and the mother is worried. Wei Xiu, who saw his parents again, suddenly realized the rustic and shabby clothes of his parents.

When Wei Xiu returned to Qinghe City to entertain many rich people, he once realized that his taste in clothing could not keep up with the increase in wealth. However, now when I see my parents' clothes, I realize that I and my parents' clothing tastes have become two worlds.

Before Babos drove to Wei's father and Wei's mother, Wei's father had already noticed the extraordinaryness of this car, and hurriedly pulled Wei's mother back two steps, for fear of touching this luxury car, and that cautious action made Wei Xiu even more guilty.

When Father and Mother Wei saw Babos stop in front of them, they were even more nervous. When they saw their precious son, dressed in a clean and handsome white shirt, get out of the car, they couldn't help but be surprised, even though they had already guessed something.

"Mom and Dad, it's been hard all the way, get in the car!" Wei Xiu didn't ask his parents why they rushed over without saying hello abruptly, but hurriedly picked up his father's snakeskin bag and stuffed it into the trunk of the car.

"Ah Xiu, is this your car?" Liang Xiuqin, the mother of the guard, looked at the tall black car in front of her, her eyes full of surprise.

(PS: The state has not been very good lately, and the quality of the last few chapters has been a little poor, so I'm very sorry.) ）