Escape From the Library

【Chemical Reaction-04】

During dinner time, there are more and more people in the employee cafeteria. Many workers are eating and chatting with their meals, looking relaxed. Judging from their performance, they are used to eating here after get off work every day. All the meals are the same. Yes, directly from the window.In other words, if the library tampers with the meals, hundreds of workers eating in the cafeteria will be recruited, and it becomes an "indiscriminate attack" method.

Send them to a chemical plant, assign them to different jobs, and then poison everyone to death... From Yue Xingwen's understanding, the library will not do such "illogical" things.

On the channel of the research group, Ke Shaobin typed and asked: "Are these meals edible? I have listened to Qin Lu chatting with people for 5 minutes, and others have already started. Would it be strange for us to leave them still like this?"

Xin Yan said, "Wait a minute." He picked up the chopsticks and carefully pulled the vegetables and rice on the plate to see if there was anything wrong. He checked for a long time and found nothing wrong.Xin Yan typed: "The food looks fine, no abnormal taste or traces of medicines, of course, if there is colorless, odorless and highly poisonous, the naked eye can't detect it. Do you want to eat it?"

Yue Xingwen said bluntly: "This course has a reasoning part. The library will not directly poison all the people in the entire factory at the beginning. In that case, all the current clues will be meaningless. To be on the safe side, everyone packs the food first. Go back to the dormitory and see if there is any accident after the other employees have eaten. If nothing happens, it proves that the food in the cafeteria has no holes and you can eat it with confidence."

Everyone agreed with this approach, and found packing boxes one after another, and brought the meals back to the dormitory.

The building has a total of 5 floors, and the staff dormitory area is just above the cafeteria.

Zhang Xiaonian and Xu Yishen live in 301 at the far east, Zhuo Feng and Liu Zhaoqing live at 302 next to them; Xin Yan and Ke Shaobin live at 416 at the west, Jiang Pingce and Yue Xingwen live at 415; there are relatively few female employees in chemical plants, and the dormitory for girls is All at the very top.Sister Lin and Sister Lan are 507, Qin Lu and Qin Miao are 508.

That is to say, their accommodation for 12 people is very scattered, not only on different floors, but also very far vertically.Yue Xingwen speculates that this arrangement is likely to be for the later "escape" link. After all, in addition to solving puzzles, this course also has the assessment condition of "leaving the chemical plant alive".

After entering the dormitory, Yue Xingwen and Jiang Pingce sat on the bed face to face, and first put the packed food beside them.Liu Zhaoqing sent a reminder from the channel of the research group: "If you eat poisonous things, they will be digested by the stomach and affect the human body. It should take about 2 hours. If it is highly toxic, there are also examples of death within 5 minutes. Be safe, we Wait two hours."

Ke Shaobin said seriously: "The food will be cold after 2 hours, and there is no microwave oven in the dormitory. Eating cold food directly is not good for the stomach. Everyone can ask Xin Yan to turn on the alcohol lamp and heat it up before eating."

Xin Yan was silent for a moment, then looked back at Ke Shaobin: "It's pretty easy to use me as a cook, right?"

Ke Shaobin adjusted his glasses and smiled sincerely: "Without you, we would have starved to death several times in the previous courses. Your alcohol lamp and retort are very useful, really."

Although Xin Yan had a serious face, when he heard this, he raised his right hand slightly, summoned an alcohol lamp, lit it and handed it to Ke Shaobin, meaning, you will heat up the food later.

As if he had found a treasure, Ke Shaobin quickly took the alcohol lamp and put it on the table.

On the channel of the research group, Yue Xingwen began to collect clues: "Everyone, post everything you found here for discussion." He recounted the content of the plan he had just seen, and Jiang Pingce made some additions.

After reading the molecular formula, Xin Yan said, "4-[bis(2-chloroethyl)amino]benzenebutyric acid, judging from the molecular structure, it should be an aromatic nitrogen mustard derivative. This is a double alkylating agent, Senior Brother Liu Do you know what this medicine is for?"

There was no detailed drug description in the plan, but a lot of molecular formulas, reaction equations, raw material lists, etc. Yue Xingwen and Jiang Pingce couldn't understand them all, so they wrote them down for other students to analyze.

Liu Zhaoqing is a medical student who studied pharmacology at the undergraduate level. After seeing the news, he stroked his chin and recalled it carefully for a moment, and then said: "It looks like an anticancer drug for chemotherapy that I learned before, and it is suitable for chronic lymphocytic leukemia. , Hodgkin's lymphoma, and other cancers, and is a cytotoxic drug."

Xu Yishen asked: "There are several mechanisms of action of cytotoxic drugs. Do they affect the production of active enzymes, or do they act on cellular genes and affect the transcription and replication of DNA?"

Xin Yan said: "According to my understanding, this dual-functional alkylating agent may produce alkylation, act on the helical chain of DNA, destroy DNA replication, and inhibit the growth and spread of cancer cells."

Sitting by the bed, Ke Shaobin saw Xin Yan analyzing the chemical drug with a serious expression on the opposite side, and couldn't help but sigh with emotion: "It's like a mountain between lines, anyway, I didn't understand."

Yue Xingwen typed: "Liberal arts students can't understand even more."

Biology, chemistry, and medicine are inseparable subjects. Liu Zhaoqing, Xu Yishen, and Xin Yan can easily understand the mechanism of action of cytotoxic drugs. Students from other majors watch their discussions, but they seem to be listening to heaven... What aromatic nitrogen mustard derivatives, Double alkylating agent, I know every word, but I really don't know each word together.

Ke Shaobin concluded: "Xin Yan, please speak in an easy-to-understand way!"

Xin Yan put it another way: "It is an anticancer drug that acts on genes. This is what the chemical factory will produce next. From the molecular formula, there is no obvious problem. It doesn't look like a toxic drug that can cause genetic mutations."

Ke Shaobin understood now: "That is to say, on the surface, the drugs produced here are not poisonous? Is it a normal chemical factory that produces anticancer drugs? Including those you saw in the laboratory before, sodium cyanide It is poisonous in itself, but after the reaction, it will also become non-toxic and be used as a raw material for other medicines?"

Xin Yan nodded: "That's right. The chemical plant did not conduct illegal drug production, and I checked the reactor, and there was no dangerous material that would explode. Even if a chemical murder case did occur, it was an individual act."

Yue Xingwen changed the subject: "Suppose, someone uses the chemical knowledge he has learned to kill people? Since sodium cyanide appears in the factory's material list, can it be used as a murder weapon?"

Xin Yan said: "Sodium cyanide is easily soluble in water. It is a highly toxic chemical raw material under strict control. A small amount of it is enough to kill a human being. If someone throws it into drinking water, it will certainly kill the target without anyone noticing it. "

Jiang Pingce said in a low voice: "Since this exam locked us in the chemical plant, both the deceased and the murderer must be inside the chemical plant. The murderer used chemical knowledge to kill people invisible, and the personnel changes inside the factory need to be paid attention to."

Yue Xingwen nodded, typed and asked: "The recent personnel changes in the factory are only the three employees who resigned, right?"

Lin Manluo: "These are the three who left, and there are five newcomers. They are all college students recruited by the school in July. We have also sorted out the list."

Lan Yarong said: "Peng Yong and Yi Jianqiang went abroad, and Cheng De's wife resigned and returned home due to illness. Their resignation reports were printed electronically, and the final 'applicant' was signed with a black pen, approved and stamped by the company. There is no problem with the process."

Jiang Pingce immediately grasped the key point: "The resignation letter is not all handwritten, only the signature is handwritten?"

Lan Yarong said: "That's right, it is possible to forge signatures. We found that on the duty list of the workshop, there are signatures of employees on duty every day. It is not difficult to directly print a resignation letter and copy the signatures of the three of them." Do it. But once the resignation letter with hundreds of words is all handwritten, the handwriting will not be easy to imitate."

Xin Yan said calmly: "Nowadays computers have become popular, it is very common practice to download a template for a resignation letter from the Internet, modify it, and then print and sign it. Normally, when an employee resigns, he will have an interview with the boss. They can’t impersonate, unless they leave their resignation letter and leave directly.”

Qin Lu said: "But I checked, there is a record of salary settlement in the finance department. Mr. Peng resigned on August 8, and Mr. Cheng resigned on July 17. They both went to the finance department to receive half a month's salary; He resigned on the 7rd and did not get his August salary."

Jiang Pingce frowned and thought for a moment, then suddenly said, "The date of their resignation is a bit strange."

Yue Xingwen looked back at him, and Jiang Pingce quickly drew a calendar on the table, explaining: "According to the resignation order of Cheng, Yi, and Peng, July and August both have 7 days, and July 8 is Tuesday. August 31rd is Tuesday, August 7th is Tuesday, and the interval is two weeks.”

Jiang Pingce's reaction speed was really fast. Yue Xingwen opened his eyes slightly when he heard the result: "That is to say, every two weeks on Tuesday, one person resigns and leaves the chemical plant?"

Jiang Pingce nodded: "This is definitely not a coincidence."

He sent his conclusions to the research team, and Ke Shaobin couldn't help shaking the goosebumps all over his body: "Black Tuesday? Why do I think they didn't resign, but were killed by the murderer!"

Liu Zhaoqing bit the bullet and said, "I checked the date. Tomorrow, August 8st is Tuesday. Will someone disappear again?"

Yue Xingwen remembered that when he walked out of the office this afternoon, he suddenly felt a chill on his back, as if a pair of eyes were staring at him in the dark. He is an atheist, and this is not a supernatural class, and it is definitely not haunted in broad daylight.

So, was someone really watching him at the time?

Yue Xingwen took a deep breath and typed on the channel of the research group: "There is probably a demon lurking in this chemical plant who uses chemical knowledge to kill people. Everyone must be careful. Except for public places like the cafeteria, someone will hand you food in private. Don't eat. If someone asks us out alone, definitely don't go."

Everyone typed to express their knowledge.

Ke Shaobin's "Black Tuesday" sent hairs down everyone's spine.

Tomorrow is Tuesday, will the "resignation" thing happen again?Did the three people who resigned before really have family problems, or were they "resigned" and actually evaporated?