"We have all learned modern history from books. Many of the teachers here have also experienced some changes in the times. Let's take Tianhua City as an example. I will tell you a few things that most people probably haven't heard of. They are not thrilling or magical, and are even somewhat commonplace.
Our living standards are getting higher and higher, and the pressure seems to be increasing. But did you know that thirty years ago, the suicide rate was actually several times higher than it is now? Let me ask you first, taking hanging as an example, how do you think hanging is done? "Bai Song asked.
No one expected Bai Song to ask such a question, but many people still stood up and expressed their understanding.
Find a beam, a rope, and a table.
This is almost everyone's understanding of hanging.
Bai Song turned on the projector in the classroom. Here was a sketch drawn by Wang Huadong.
The house was bare, with no beams or ropes. This is a black and white sketch, which is somewhat depressing. In the middle of the picture, a woman is hanging between the cabinet and the head of the kang.
This may be a cabinet for a woman to use when she gets married, or it may have been made later. It is at the same height as the head of the kang, less than 80 cm high. The quality of the cabinet cannot be determined from the sketch.
There was only a ten-centimeter gap between the cabinet and the head of the kang. The woman put her neck between the head of the kang and the cabinet, pressed the strength of her upper body on a chopstick, and half-knelt with her legs. She was hanged to death by a chopstick.
"This is a chopstick." Bai Song pointed to the horizontal stick that supported the woman, "It is also a tool for hanging."
The woman looked extremely thin, and her posture and movements made people feel inexplicably sad.
This is a situation where even if you want to die, you can't find a decent way to do it.
All the students and teachers were shocked, they had never seen this!
They had only heard of using ropes, but they never thought about what to do if the poor people couldn't find a rope or even a beam in the house!
"I think, without my asking, everyone has different experiences." Bai Song said: "Most of us, like me, will eventually work in the public security field. As a police officer for decades, we will naturally experience the changes of the times. What I'm talking about happened when the old policeman next to me was working. Maybe you think this happened hundreds of years ago, but it was actually decades ago. Let me show you this case again."
After that, Bai Song showed everyone a case of suicide by charcoal burning, which is still very representative today.
"Everyone may have heard of this phrase: seeing the big picture from the small details. In future work, everyone will definitely have similar discoveries." Bai Song smiled slightly.
Some people nodded as if they understood, but most people were still confused.
"Inspector Bai, does what you are talking about count as a pattern?" a girl raised her hand and asked.
Bai Song thought for a moment: "Yes, no. Human power is limited. None of us can figure out all the people in the jurisdiction, and it is impossible to understand the ins and outs of each case. Especially in the police station, I believe that our classmates are full of fighting spirit, but a considerable number of people will wear down your fighting spirit in the police station.
Every day is filled with trivial matters, and when a major case comes, you are not even qualified to participate. Three to five years pass by in a flash. This is a very real thing. By that time, everyone will be faced with buying a house, supporting a family, and facing the daily necessities of life, and the feelings will not be so simple. We are all of the same age, and I don't want to preach to you about principles and spirituality, but if my class today can make you think a little more before working, then it will be a success. ”
After saying that, Bai Song clapped his hands and said, "The course has officially begun. Today I will be teaching criminal investigation."
This is also the textbook that Bai Song and others have been compiling recently.
Writing textbooks is actually not that difficult. Recently, they have bought all similar books available on the market. None of them were written by front-line workers, and there are a lot of theoretical things.
Of course, these big guys are not out of touch with reality. Many contents, such as the use of special information, are explained very well, and Bai Song and others need to learn more.
The cases that Bai Song talked about today were all cases that he had solved himself, and some of them were no longer under confidentiality.
For example, in the case of Yao Xin murdering his father, if we were to tell the story in reverse order:
"A filial son and daughter celebrated their father's birthday. The father was eating cake alone at home and it caused an explosion. After the fire was put out, all the evidence disappeared. During the investigation, a huge conflict arose between the son and daughter. The daughter killed her brother... What happened to all this..."
When writing about cases in novels, they are all written in reverse order, with some strange and suspenseful beginnings. From a God's perspective, the most incomprehensible things in the case are first shown to attract readers, and then the mystery is slowly revealed.
Although this often makes people feel that it is "nothing special" when solving the mystery, it is really eye-catching.
It’s a pity that Bai Song and others don’t approach the case from this perspective. They handle cases from a police perspective, so they can't proceed from the most suspenseful and interesting parts first, and can only proceed one by one.
As a professional criminal policeman, Bai Song has a relatively thorough understanding of many cases. The leader of a case plays a vital role.
For example, when handling any case, it is divided into two parts for investigation, the first is the basic department, and the second is the analysis and judgment department.
The basic department is very simple, which is what can be done in every case. For example, check surveillance, call and chat records, check witnesses and evidence, conduct on-site investigations, autopsy, household water and electricity consumption, purchase of unknown substances, car commuting, recent close contacts, neighbors' related situations, etc.
These are all things that need to be investigated. When investigating these basic issues in major homicide cases, no matter what the cost.
The second is research and judgment. Getting these things and turning them into meaningful and valuable clues is not as intuitive as in books, and requires a certain understanding of human nature.
Bai Song originally thought that he could only speak for two hours, and the lesson plan he prepared was only two hours long. Before he knew it, it was already past four o'clock, and the students were fascinated by his speech.
Many people went to the toilet during the trip, but still came back after using it.
Although this is not his alma mater, Bai Song still shared all his experiences over the past few years without reservation. These people will be the backbone of Tianhua City in the future.
"That's all I have to say about the case. Modern criminal investigation is a broad and profound subject. In the past two days, my team members have talked to you about on-site investigation, autopsy and the application of electronic computers. This is the end of three days of lectures. I hope it will be helpful to you." Bai Song bowed to everyone and ended the lecture.
There was thunderous applause.
Continue read on readnovelmtl.com
