"What? this ......" In the office, Li Xiaoxian, who had just figured out the situation, thought and said, "The medical laboratory has nothing to do with the aviation school, we have already investigated Jin Xiaoling's interpersonal relationship, it seems that there is no such person, right?"

"Indeed, it is indeed ......" At this time, Chu Juntao looked at the computer and said, "I just checked, in Anzhou in 03, although formalin solution is available in ordinary pharmacies or hospitals, the amount is very small!"

"If it's a bulk order, you need to apply to a pharmaceutical company, and it's hard for an individual to get it!

"And ......," Chu Juntao said again, "Brother Tang is right, formalin solution is not the same as antiseptic solution, and other ingredients must be added to it as a ratio, in those days, this ratio was prepared by the laboratory itself!"

"So......" Zhou Tang said with certainty, "Since the murderer can get a large amount of embalming solution, it means that he must be engaged in related work!"

"But, as I said just now," Li Xiaoxian said, "we haven't found anyone with a similar profession from Jin Xiaoling's interpersonal relationships!"

"Then start from the beginning!" Zhou Tang said, "In addition to Jin Xiaoling, Shui Qiqi and Ai Qing are the same!"

"But......" he paused for a moment and changed his words, "before we investigate, do we need to know what industries have access to professional antiseptic solutions?"

"What else is there besides a medical laboratory?"

"Too much, right?" Lei Yiting said, "It's very common in the hospital!

"Big brother, please!" Si Rui knocked on Lei Yiting's skull, "That's disinfectant water, okay! Don't talk nonsense if you don't understand!"

"...... in the hospital," Li Xiaoxian recalled, "it seems that only the pathology department will use it, and the dosage is definitely not very large!"

"Formalin is used to 'soak corpses', and is generally only used in medical experimental units, or specimen making units......"

"No!" At this time, Chu Juntao spoke, "You are all wrong, this thing is formaldehyde, and its application is far wider than we imagined!"

"For example, industrial manufacturing, wood textiles, etc., will be used!

"Even in the food processing industry, it will be used!

"Formaldehyde added food, will become bright color, long time not rotten, we often eat some canned mushrooms, fish, even noodles, dumpling wrappers have ......"

"I'll go!" Lei Yiting wiped his sweat, "Then I have to pay attention to it from now on! I still prefer canned mushrooms and dripping ......"

"Peeling," Zhou Tang said, "You have taken the topic away again, if it is for industrial use, then the forensic center can find out a long time ago!"

"I had a phone call with Zhang Rong just now, and he assured me that the ratio of that antiseptic solution is definitely used to 'soak the corpse'......"

"In that case, the scope should be very small!" Li Xiaoxian analyzed, "Could it be ...... Was it that we ignored in our previous survey?

"Or, is this person far away from Jin Xiaoling?

"I have another question that I want to raise, let everyone reason!" At this time, Si Rui stood in front of everyone and said, "Brother Tang has made assumptions before, because the body is not well preserved, so Brother Tang suspects that the murderer may not be a professional!"

"So now, if the murderer can get his hands on the embalming solution, then it is enough to show that he is a professional, so why, would he let the preservation of the body fail?

"Is that ...... It's a bit of a contradiction, isn't it?"

"This ......"

I have to say that the question raised by Si Rui is very reasonable, which made everyone fall into deep thinking again......

"Could it be...... Is the murderer just an apprentice?" Lei Yiting guessed, "Or is it an apprentice?"

"Or ......," Chu Juntao guessed, "The embalming solution was stolen? The murderer himself can't use it, but he can usually access it?"

"I don't think so, in fact, the answer is very simple!" Li Xiaoxian said, "making specimens is a complex and delicate work, even professionals, may not be 100% successful, right?"

"No!" Zhou Tang said, "Zhang Rong said that professional production will release the blood and remove internal organs, but none of the three corpses we found have been treated like this!"

"The murderer simply soaked the body in an embalming solution......

"That's right, tsk......" Li Xiaoxian smacked his lips and said, "Then this matter is indeed contradictory! There must be something wrong......

"Wait......" Suddenly, Zhou Tang's eyes lit up, he thought of something, and said to everyone, "You say...... Is there a place in the aviation school where you can use formalin?"

"This ......" everyone looked at each other, and Si Rui said, "It doesn't seem like it, right? Although Miss Ben didn't go to aviation school, it's all places to train flight attendants, what do you want Formalin to do?"

"yes......"

Zhou Tang had actually thought of this before, but the aviation school is not a medical school, how can there be a place where antiseptic solutions can be used?

"Smack!"

Lei Yiting suddenly slapped his face and said excitedly: "Have we all ignored the origin?

"We've been paying attention to the aviation school right now, thinking that the problem is in the school, but what if it's not the school?"

"Please!" Si Rui glanced at it, "Where does the airline have formalin?"

"This ......," Lei Yiting grinned, still unconvinced, "should we check? Anyway, everyone doesn't know about airlines...... What if there is?"

"That's right," Zhou Tang got Lei Yiting's prompt, took out his mobile phone on the spot and said, "We don't know, but I know who does!"

After saying that, he dialed his mobile phone again and called that Ji Mei!

"Hey, Officer, do you know what time it is?" a charming woman's voice came from the phone, "Is it an ulterior motive to call so late?"

“......”

The agent was speechless, and Zhou Tang frowned.

"Sorry to interrupt, Ji Nu...... Miss Ji!" Zhou Tang asked, "There is something important I want to know from you!"

"Do you know where airlines use formalin?"

"Formalin?disinfectant?" Ji Mei was curious, "Does it sound so familiar?"

"It's not a disinfectant, it's an antiseptic solution, specially used to soak specimens!" Zhou Tang explained.

"Oh...... I know, but ......," Ji Mei said embarrassedly, "Are you kidding?

"The funeral transportation at the airport is strictly controlled, and no formalin will be used......! Very little, right?"

"Oh...... That's bother!" Zhou Tang looked disappointed, but when he was about to hang up the phone, he still remembered to ask again, "Wait a minute, if the airline doesn't have it, then what about your school?"

"Aviation school?" Ji Mei thought for a moment, and then said after three seconds, "I remember...... When you were in school, you seemed to have seen it?"

"Huh!?" Zhou Tang was surprised and hurriedly asked, "Does the aviation school have formalin?"

"Oh...... I remember!" Ji Mei said, "There is a physiology classroom in our school, from which we have learned about human anatomy and some first aid and hygiene knowledge, and there are some simple organ specimens on the shelves of the classroom, and the bubble specimens should be the formalin you said, right?"