Wen Ning's words reminded me, he said that people are psychologically complicated when they kill people, and the murderer amputates his limbs, and instead of destroying the traces of the scene, he took away a bag of pens and stumps, which is likely to have no purpose, but the murderer suddenly wants to do it. Psychologically, his speculation is indeed possible.

However, the human heart is not only complex when it comes to killing, the brain is the most complex organ of the human body, and it is the most difficult place for psychology and physiology to overcome. When I say this, all eyes are on me, and everyone wants to know how the pen moves.

"If my guess is correct, the pen will move because of psychological suggestion." I said to everyone in the office.

I asked the leaders to invite Dr. Liu, who is in charge of the research of criminal psychology and investigative psychology in the police academy, and he is also in his sixties, and he has reached the age of retirement, but he will stay in the psychological research room of the police academy all day long, because of his old qualifications, everyone, including the leaders of the police academy, call him Dr. Liu.

His name is Liu Wei, and he has close contact with the police in City B, and when the police were studying several major murder cases, Dr. Liu played a very helpful role in analyzing the murderer's motive for the crime and the murderer's psychological activities during and after the crime. A few years ago, Dr. Liu was still teaching criminal psychology at school, and Du Lei and I also went to listen to it.

Now he has retired from the field of teaching and devoted himself to the academic problems of psychology, which is well-known in China.

When the leader heard that I was going to invite Dr. Liu, he went in person, and soon, the leader took Dr. Liu into the office. Dr. Liu was already a little unsteady when he walked, so everyone stood up and greeted Dr. Liu politely. After Dr. Liu sat down, he nodded at everyone and smiled and asked him what was the matter.

I didn't beat around the bush and asked Dr. Liu if he had any research on Fuping. Dr. Liu was in the research room every day, so he had not heard of the murder case, and he nodded, saying that he had indeed studied Fuping. Dr. Liu is an elder and I admire him a lot, so I speak very politely.

I told Dr. Liu about the two girls in the girls' dormitory when they invited the pen fairy, and Dr. Liu was not surprised at all when I heard the pen move, which made me more sure of my speculation.

The two girls put out the lights in the dormitory when they invited the pen fairy, leaving only a dim candle. Everyone else gathered outside the dormitory, silent. There was a small forest next to the dormitory, and I remember the sound of cicadas chirping that night, and in that environment, the dormitory was a little secluded.

According to the confessions of the witnesses, the two girls held pencils and kept their eyes closed for more than 10 minutes, in which case the arm muscles were prone to numbness. Hearing my analysis, a criminal police officer immediately interjected, saying that it was because the arms of the two girls were numb, so they accidentally moved the pen.

I shook my head, I don't think the pen moved for such a simple reason, because the hands of the two girls were held together, and there was a pen to support, and at the same time, the elbows of the two girls were leaning on the table, and for more than ten minutes, although the arms were numb, but it was not enough to control the balance and let the pen move.

Everyone listened carefully, the room was stuffy, there were many people, everyone's clothes were soaked with sweat, the ceiling fan was very worn, and the sound of turning was irritable.

Keeping the same posture for more than ten minutes is different, even the strongest person will have numb arms, and the muscles of the human body are sore in the case of a slight external factor or other factors, and the arm is easy to move. The crux of the problem is precisely because of the psychology of the two girls.

When I went to the girls' dormitory, I caught a look of worry and horror on almost everyone's face, which means that most of the girls were afraid, including the two girls who invited the pen fairy.

If my guess is correct, the two girls said that they didn't believe in the pen fairy, but they were subconsciously slightly afraid of it. They also wanted to prove that Bixian had no scientific basis at all, so as to eliminate the fear in their hearts. However, after the game began, the two of them closed their eyes, and in such a secluded environment, the fear in their hearts was even greater.

For more than ten minutes, the psychology of the two girls is absolutely complicated, what they are thinking, I'm afraid only they know, but we can speculate a thing or two. The weather was already hot, the dormitory was cramped, the candlelight was slightly hot, the two girls were sweating all over, and listening to the cicadas outside the window, their hearts would be anxious.

Everyone was silent, but the gasps of so many people created a tense atmosphere. Human limbs are controlled by the brain, some are consciously controlled, and some are unconscious. Maybe it was one of the girls, or maybe the two girls After ten minutes, the brain subconsciously believed that the pen fairy would come, and under the psychological suggestion, coupled with the numbness of the arm muscles, the pen moved.

As long as one person has a hand, the other person's hand will also be pulled, but because it is a psychological suggestion, even the girl who has done it herself does not know that her hand is moving. The pen moved twice, the first time the pen moved like this, and the second time, the reason was because of psychological suggestion. After the pen moved, not only the two girls, but everyone was very frightened.

There is a small detail that I remember very clearly, after the pen moved for the first time, someone whispered a reminder not to let go of the hand, otherwise it would offend the pen fairy. Everyone was frightened, and the two girls didn't dare to let go, they followed the steps of inviting the pen fairy, asked the pen fairy questions, and after that, the pen moved again.

Everyone was frightened, or in other words, both parties were completely convinced that the pen fairy had arrived in their dormitory, and their psychological hints were even worse, so this time, it didn't take more than ten minutes for the pen to move again. Psychological suggestion is actually a kind of unconscious or conscious self-hypnosis, and the psychological suggestion of the two girls is unconscious, so the amplitude of the pen movement is not too large, which can also explain why the pen only leaves a trace of about three centimeters on the paper.

Hearing my analysis, some people suddenly realized, and some people still frowned, including Wen Ning. At that time, the development of psychology was still very slow, and many theories about psychology could not be understood, especially when it came to mental hypnosis. Wen Ning asked Dr. Liu if psychological suggestion really has such a great ability to make the person do such a thing without knowing it, and it is also a hint to himself.

Dr. Liu didn't answer, he stood up, let's wait a minute, and he walked slowly into the next office, and after a while, he came over with a few things in his hand, a teapot, and a few magnets. Dr. Liu strung three magnets with thin wires, two of which were hung from a pen holder on the table, and the other was handed over to a criminal police officer who was present.

Wen Ning said to the detective that the two things hanging from the pen stand, the left one was a magnet, and the other one was just a very ordinary stone. He asked the detective to hold a third magnet that was hung with a thin wire, placed it between the two magnets on the left and right, and told him to stay still.

The detective complied, and everyone observed very carefully, and after about a few minutes, the detective's hand slowly moved towards the magnet on the left. Dr. Liu took the magnet from the criminal policeman, and he told everyone that in fact, the two small stones hanging on the pen holder were just ordinary stones that looked like magnets, and they were not magnets at all.

Everyone was stunned, and Dr. Liu personally demonstrated the power of psychological suggestion for everyone. The reason why the detective's hand moved was because Dr. Liu said that the magnet on the left was the magnet, so the detective thought that the magnet in his hand should move to the left.

Dr. Liu brought up the kettle again, and he told Wen Ning that the teapot was filled with boiling water, and he asked Wen Ning to touch the wall of the teapot with his hand.

Dr. Liu was carrying the teapot, the material of the teapot was not insulated, and Wen Ning didn't dare to reach out to touch it after thinking about it for a long time. Dr. Liu smiled and put his hand on the teapot, which he said contained cold water. Wen Ning finally understood what Dr. Liu meant.

Dr. Liu said that my analysis was very correct, saying that if the two girls had no malicious or deliberate purpose, they moved the pen because of psychological suggestion.