Liu Pengcheng shook his head after reading the situation of Group A, saying that everyone has a motive for the small train to capsize, but at least three out of four people have a motive, especially when the overturning happened in Class B.

Liu Pengcheng continued to look down, and it was the situation of Class B and related records.

The leader of class B, the mechanic Lao Wang, is also an old employee in the park, an old secondary school student in the eighties, learning to be mechanical, after so many years, the work is repetitive work for him, but for some emerging problems, he neither knows nor learns. If the boss of Group A still can't figure it out, he usually has to spend money to find an engineer outside. This person is a big talker, likes to overpower others in everything, and treats himself as a "official" as a group leader. Seven of the eight people in the two groups annoyed him.

Class B technician Xiao Zeng. This is an unlucky child, originally graduated from Zhongyuan Mining University with a major in mechanical engineering, and after graduation, Mei Zizi took the dispatch certificate and was assigned to the switchboard factory of a mining bureau. After 26 days of work, he was laid off. His family conditions were average, so he had to come out to Pingzhou to "beg for a living" by himself, just in time for the children's park to recruit a large collective. As a result, a national regular undergraduate student has become a large collective of cartoon car teams.

Xiao Zeng is very smart, and after all, he has received a formal university education, and he can handle general things, and he can also solve most of the problems that need to be solved outside the original cost. At this time, Lao Wang was by Xiao Zeng's side, and he didn't say a few words about the donkey's lips and the horse's mouth. When Xiao Zeng finished it immediately, he ran to the leader to show his merits. As a result, he can get a lot of bonuses and be praised by the leaders.

Once or twice, Xiao Zeng didn't know, how could he not know three or four times? Xiao Zeng is a cultural person, of course, he can't do things with his fists, so he wrote a letter of resignation. The letter made everything clear, and explained that the reason for the resignation was that I had solved all the problems that I had spent money on, but I didn't have a penny bonus, so I didn't do this job!

The leaders of the park didn't take it seriously at the beginning, a collective worker, and resigned when he resigned. But when I looked at the thick resignation letter, I was interested, and when I read the content inside, I almost had a crooked nose from the leader. Of course, the leaders of other people will not be angry because of the merits of a collective worker. Is it true that the leader is angry, is your surname Wang treating us leaders as big fools? As a result, Xiao Zeng's resignation was no follow-up, and Lao Wang was named and criticized, and he was still reading a review on the loudspeaker. Half a year's bonus was deducted to Xiao Zeng.

Since then, Lao Wang and Xiao Zeng have not shared the sky. When Lao Gao punched out one and a half of Lao Wang's front teeth, it was Xiao Zeng who pretended to pull the frame and dragged Lao Wang.

Class B conductor Sister Zhou. This sister is also a very individual person, her own work is not bad at all, and she doesn't do her own work at all. I go to work every day, get off work at the end of the day, and I never participate in the affairs of the unit, as if I am living in another world.

Class B ticket inspector Xiao Wu. This is also a character, my husband is a deputy department-level cadre in the city, although he is not in charge of the park, but the rank is there. The appearance of a young grandmother all day long. Every day before getting off work, the cleaning is always pulled twice with a broom, so when Xiao Shen goes to work, he can see the garbage in a place, which is no different from not cleaning up. And this person is very irresponsible about his work, and the inspection of safety is also sloppy. If she hadn't checked carefully, the little girl wouldn't have been thrown out.

Liu Pengcheng closed the materials and asked, "Does Director Gao have a bit of a spectrum in his heart?" ”

Lao Gao lit another cigarette and said, "This eucalyptus, as long as you jump out of that device, it's not difficult." In the course of the investigation, we focused on asking the employees of Class A about their activities after work, whether they left or not, and who saw them. The result is quite interesting, one is Xiao Feng, he didn't leave after work, but ran to the bumper car to help, it is said that he was a little interesting to a little girl in that team.

There is also the ticket inspector Xiao Shen, who had already left with Sister Li when she got off work.

Because Sister Li's family and Xiao Shen have a section of the road, they often walk together. But Xiao Shen suddenly said that she had a stomach upset and wanted to go to the toilet, of course Sister Li didn't want to wait for her, so she left by herself. ”

That's a train of thought, too! Liu Pengcheng thought. Figuring out who might be at the scene of the eucalyptus scene is likely to be the murderer.

Liu Pengcheng was just about to speak, when Director Liu walked into the office with a middle-aged man and a young man.

Director Liu said: "Liu Bureau, High Bureau. This is Professor Yuan from the Department of Physics of Pingzhou Normal University, and this is his student Xiao Li. ”

As soon as Liu Pengcheng heard it, he knew that this was the expert that the leader had promised him had arrived. Hurriedly stepped forward to shake hands.

After greeting for a while, Liu Pengcheng knew that Professor Yuan was a real expert, and he presided over the design of Pingzhou's iconic super Ferris wheel.

Liu Pengcheng and Lao Gao put the eucalyptus parts, especially the situation related to the mechanical device and Professor Yuan's introduction. Liu Pengcheng knows that for these experts, the more precise the conditions they know, the better. So try to use numbers to introduce the eucalyptus, such as the angle and depth of the cement nail inserted into the trunk. Approximate volume and three-dimensional figures of the underground installation, etc.

Professor Yuan listened to this all the time, with a smile on his face. Xiao Li hurriedly recorded, especially those numbers.

After Liu Pengcheng finished talking about the situation, Professor Yuan laughed: "I didn't expect my major to help the public security break the eucalyptus, this eucalyptus, this gadget, well, it's a little interesting, it's a little interesting." ”

He unceremoniously picked up his student's notebook, and said as he looked at it: "Since this nail can collapse and fly out, it means that there is a powerful bullet yellow in this device." Otherwise, according to the characteristics of cement nails, they are either straight or bent, but they are not elastic. I'll see, there should also be a gear mechanism here, a gear placed in such a small thing, and there is a huge carrying force, uu reading well, the number of teeth should not be large. Xiao Li, can you figure out what it is? ”

Xiao Li nodded, very confident: "Professor, I guess Momo Huhu has some ideas." I need some time, maybe twenty minutes. ”

Professor Yuan laughed: "Okay, this is what you said, it is a military order in front of the director of the public security bureau, I will give you twenty minutes, and I will count your credits if you figure it out." If you're bragging, hum! ”

Xiao Li didn't speak, took out a big book in the bag he was carrying, sat on the sofa and began to write and draw.

Lao Gao asked, "Professor Yuan, in your opinion, this matter is quite simple. ”

Professor Yuan hurriedly shook his hand: "Don't be misled by me. With a very rudimentary mechanism, the wrecker that deceived the small train and the insurance agency behind it can also cause the small train to overturn. It's not that simple.

You see, I gave him as a student's assignment because you had given too many known conditions, like, yes, it was like knowing the answer in advance to push back, and of course the difficulty was reduced. ”

Liu Pengcheng asked: "The person who made or developed this kind of small organ has to be a graduate of a college or a professional school?" ”

Professor Yuan thought about it this time and said: "It's not necessarily, most of the theoretical knowledge and most of the cutting-edge knowledge in university study, and this thing is really not useful." But this person should have a certain amount of mechanical common sense, and it doesn't take much sophistication to get started. For example, I worked as a worker in a machine factory for a few months, and that's it. ”

Liu Pengcheng nodded, that's right.

The three of them were chatting here, and Xiao Li had already come over to hand in his homework: "Professor, I think this institution should be like this, or something like this." Look at it, right? ”