After breakfast, Li Haoran let a few students go first, but he stayed in the cafeteria.

I sat in the cafeteria for a while just now, ostensibly chatting with Lin Xian and others, but I had been secretly observing the environment in the cafeteria. There will be so many students who are poisoned, and the poison should have started from this cafeteria.

Yesterday, the police of the Municipal Public Security Bureau had already come to the scene to collect evidence, and after a night of testing, Li Haoran simply dialed his mother's phone: "Sister Xinrou, it's me!"

"Haoran, is there anything important about calling me so early?" Duan Xinrou asked with concern,

"Sister Xinrou, I want to know, has the police found the cause of the poisoning?"

Mentioning this, Duan Xinrou frowned: "The staff of the police investigation team has conducted a serious inspection of the food in the canteen, except for the toxic substances found in the cooked food that has been processed, the other vegetables and meat products are almost completely qualified, just now we were talking about what makes those cooked foods become toxic substances, whether this student poisoning incident is man-made or accidental, it just so happened that your call came, and there is no substantial progress at present." ”

"What's wrong with the cooked food?" Li Haoran was puzzled.

"Yes, in order to close the case as much as possible, Deputy Mayor Wang Fei personally rushed to the scene again with forensic experts, you can ask him for specific matters!"

During the phone call, Li Haoran had already rushed to the first canteen, and Wang Fei had indeed arrived at the scene with a group of people, and was carefully checking the scene!

Although the investigation team had previously conducted a detailed inspection of all kinds of food in the canteen, this group of police officers still meticulously re-inspected every food in the canteen, and finally the results of the inspection were exactly the same as the results of the investigation team's inspection, except for the cooked food that had been processed, there was no problem with all kinds of vegetables and meat products in the refrigerator of the canteen.

Seeing this situation, Wang Fei was also full of doubts, he looked at the food in front of him that was found to be poisonous, and his heart was puzzled, could it really be like Secretary Duan said, it was very likely that it was a man-made poisoning incident? If this is the case, the person who poisoned only needs to poison a dish of vegetables. There is no need to poison every dish, Wang Fei pondered for a long time, but he never figured out why there were toxic substances in processed cooked food, but there was no problem with unprocessed food.

At this time, he was lost in thought. Li Haoran walked into the cafeteria from the outside and asked Wang Fei very politely: "Mayor Wang, how are the test results?

Seeing that it was Li Haoran, Wang Fei's puzzled cheeks instantly became happy: "I said Brother Haoran, just call me Brother Fei, the mayor and mayor, how awkward it sounds!"

"Hehe, during the case handling of Brother Fei, it is really awkward for me to shout like this!"

"By the way, Haoran, thanks to you for yesterday's incident, otherwise the consequences are really unimaginable, and the leaders of Kyoto will definitely be alarmed!"

"It's just luck, if it weren't for the fact that it happened to be here, things really couldn't be imagined!" Thinking of this, Li Haoran felt that the other party must be targeting him, and at first he attacked Chu Yunyun, but unfortunately because of the reason he laid the Pure Heart Mantra, they failed to succeed, so they made such a wave of things!

"By the way, Haoran, did you come to the scene for something?"

"This poisoning incident, there is a good chance that it was caused by human factors, and I am a little worried, so come and see, by the way, Brother Fei, what substantive progress has you made in your investigation?"

Wang Fei introduced: "There is one thing that I am very puzzled about. The processed cooked food here is clearly found to contain aldehydes, ketones, aflatoxin and other three elements, and three elements are still under investigation. If it is human-skilled, then there is no need for the poisoner to poison every cooked food, but we can't find the source of these toxins at the moment, so I can't be sure how these toxins got into the food?"

Li Haoran was not much surprised by the results of this inspection, after all, before the arrival of this batch of forensic evidence, the investigation team had repeatedly conducted random inspections of the food in the canteen, and in the end, this was the result, Li Haoran thought about it and said: " Fei Ge's analysis is very reasonable, but the mentality of criminals is not something we can figure out, maybe there was no one in the school cafeteria when he was poisoned, in order to be able to cause a wide range of effects, so he poured some into each dish, but it was precisely his practice that diluted the toxin a lot. This did not cause the students to be poisoned and died, so it can be regarded as a blessing in misfortune. ”

Li Haoran's analysis also has some truth, but he always feels that he seems to have ignored something.

At this time, Wang Fei carefully recalled the details of the inspection just now, and did not find anything missing: "This canteen is so big, we have checked it many times, but in the end we only got this answer." Now all sectors of society are staring at this matter, and our Donghaihai Municipal Party Committee and Municipal Government are also waiting for the news of our police investigation, I am sure that this is a premeditated poisoning case, and the most likely person to be poisoned is the canteen staff, so I am ready to report to the Municipal Party Committee and Municipal Government according to the results of this investigation. ”

Li Haoran frowned, if it is reported now, the murderer is not found, the source of the poisoned food is not found, it is very likely that such a situation will occur again, Li Haoran became dignified, and his tone became more rigorous, and said: "Brother Fei, wait a minute, maybe we are likely to ignore something." ”

Li Haoran closed his eyes, looked at Yi Qiqi who was meditating and observing the surroundings with his true qi, but he didn't gain anything, carefully pondering every detail, and after a while, he asked Wang Fei with a solemn face: "Brother Fei! According to what you said before, only cooked food contains toxic substances, so these toxic substances can only be added when the food is being processed, by the way! Have you checked the seasonings of those processed foods in the school cafeteria?"

"We have carefully inspected each of those condiments, although they contain some toxic substances, but the content is very small, not enough to poison so many students at the same time, so I dare to be sure that the condiment is not the source of toxic substances!" Wang Fei heard Li Haoran mention the condiment, and immediately stated the test results and inferences of the condiment to Li Haoran.

Li Haoran heard Wang Fei's answer, his face was also full of doubts, and then he fell into contemplation, and during this period, Li Haoran reviewed the inspection report he saw before, and always felt that he was going to find out the truth, but he didn't find anything, Li Haoran thought about it for a long time, and this matter can only be temporarily over, if the murderer dares to commit the crime again, he must catch him, and now he can only develop various antidotes to prevent similar incidents from happening again!

followed Wang Fei downstairs, Li Haoran was still thinking about what happened, the poison of the "three insects and aconitum aconite" among the students would never be wrong, but how to add the poison to it, Li Haoran couldn't figure it out, the poison was extremely evenly distributed in each dish, and the possibility of committing crimes before and after cooking had been ruled out, but even in cooking, it was impossible for a chef to be responsible for cooking all the dishes, could it be that the group bought the poison? This crazy idea sounded in Li Haoran's mind!

But at this time, there was a "pop" sound in the cafeteria downstairs, and a female classmate collided with another male classmate with a freshly prepared meal. As a result, a whole dish happened to be poured on the male classmate's body. Seeing this, the female student quickly apologized to the male classmate: "I'm sorry! I'm sorry! I didn't pay attention just now, and I accidentally bumped into you." ”

Because they were all classmates, and the other party was a good-looking girl, although the male classmate was very uncomfortable, he still replied politely: "It's okay! This dress is going to be washed today, don't blame yourself too much!"

"It's okay, you take it off, I'll wash your ...... for you"

"No...... No more!"

"It's okay......"

In fact, the weather just after this National Day is still very hot, and the boy only wore a T-shirt, I don't know if this girl really doesn't know or fake I don't know, anyway, because of this, the boy is a blessing in disguise and finally hugged the beauty!

"Oil!" When Li Haoran heard the male classmate mention the word oil stains, he suddenly came to his senses and asked Wang Fei happily: "Brother Fei, I remember that in the examination report you told me earlier, it was mentioned that peroxide was formed after the oxidation of oil was found in the patient's body, right?"

Wang Fei saw Li Haoran's shocked expression, although he didn't understand the purpose of Li Haoran's sudden question, he still nodded and replied: "When we examined the residues in the bodies of those students and teachers who were more serious, we did find that the bodies of these students and teachers had oil oxidized to form peroxide.

I wondered why I had thought of something, but I couldn't remember it all of a sudden, if it weren't for what I had just seen. I almost overlooked the most important thing, and I knew what the problem was. ”

"What's the problem?" asked Wang Fei puzzled.

"Have you checked the cooking oil in the school cafeteria?"

Hearing Li Haoran's words, Wang Fei suddenly woke up, only to find that everyone had been checking for so long but ignored the edible oil, and said with the last glimmer of hope: "I always felt as if I was leaking something, it turned out that the edible oil was leaking!"

After saying that, Wang Fei took a group of people upstairs again to test the edible oil used in the canteen, and it didn't take long for the results to come out!

Wang Fei said to Li Haoran with some excitement: "Haoran, you really guessed correctly, because there is no cooking oil in the school cafeteria at all, so I ignored this situation at the beginning! After hearing your reminder earlier, I specifically asked the person in charge of the canteen, and learned from him that the school had just entered a batch of edible oil the day before yesterday and put it in the warehouse behind the cafeteria. So I took a barrel from it and found that the peroxide value and acid value of the oil were all exceeded, and then I dismantled a few barrels, and the situation was exactly the same, it contained a lot of toxic substances in front of it, and this poisoner was really mad, in order to achieve the goal, he actually poisoned so much oil!"

"Is it possible that it is gutter oil?" Li Haoran was afraid that he had wronged a good person, so he asked himself for the last time.

Wang Fei shook his head and vetoed it directly: "I Huaxia people grew up eating gutter oil, how could a small gutter oil hurt us, if it wasn't poisoning, it wouldn't have caused such a large-scale poisoning incident at all! Okay Haoran, thanks to you this time, I have to go back quickly to explain the whole story of the investigation to your mother, okay, I will invite you to drink another day." ”

"Okay Phineas!"

After Li Haoran sent Wang Fei away, he fell into contemplation again, he had let go of Bing Zhengmen's disciples before, because Bing Zhengmen still had patriotism to help him in the Sino-Korean confrontation, and now that the disciples have done this kind of hurtful thing, Li Haoran categorically can't let Bing Zhengmen go again!

This book was first published in the King of Books