Taking advantage of the fact that his voice could not make a sound, Lee Myung-bak designed an instrument that converts sound waves into graphics, similar to the principle of the original tape recorder burning tapes by skipping needles. The sonic vibration jumps the needle and carves grooves of different shades into the tape, which is how the original tape recorder recorded sound. However, Lee Myung-bak's design is a little more complicated, with sound waves driving the pointer and drawing a ripple diagram under the paper, which is transformed and amplified by about two forces.

Lee Myung-bak called this instrument a sonograph, because it was so simple, he believed that such a thing had existed for a long time, so it was not considered an invention. A skipping needle is held in place on a post, and the vibration of the skipping needle pulls the gear up and down, which drives a pen and draws a curve on a roll of paper that resembles an enlarged tape. Of course, toilet paper cannot be used for rolling paper, and slightly better white paper is used. The two reels are constantly rotating to the left, so that the sound waves can be recorded all the time.

Lee Myung-bak believes that these curves, recorded on rolling paper, are the third measure of sound waves: sound phase.

The design transforms invisible sound waves into visual images, and Lee believes it can make his mantra practice faster. For the sake of future promotion, he really gave up the main part of the design drawings to a small processing factory, and he made the important part at home - this is also out of the need for confidentiality. Of course, he knew the importance of secrecy, and he would rather sacrifice a little sensitivity of the sonometer to protect his own interests.

Because of its simple structure, he received the main part of the original sonograph about the third day, and paid a large sum of money for it. At this time, the throat protection medicine also took effect, and he once again began his own practice with the sonometer - he was the only one in the world who recited mantras like this, and there was no semicolon.

This matter is related to his career, so he must give it his all. The mobile phone is basically turned off, and I usually don't go anywhere, just stay in the special office. Fortunately, during this period of time, the wind and waves were calm, and he was able to practice with peace of mind.

Ren Qiuling didn't encounter any major cases, but only assisted the Criminal Investigation Bureau in solving a poisoning case. The deceased in this case was a horse, and seriously it couldn't be smaller. However, Director Luo asked her to take this opportunity to impart some profiling knowledge to the grassroots investigators, and she agreed.

Rural poisoning cases are usually committed against livestock, and it can be assumed that the crime is not intended to cause any harm to people, but to cause economic losses to people. The motive for this type of case is usually hatred.

Revenge by poisoning out of hatred can be inferred that the offender's physical strength is inferior to that of the lost owner.

Although corrals are generally built outdoors, people who are not familiar with the owner's schedule will not find the opportunity to poison them. Because the poison is a very smelly pesticide, who would carry a bottle of smelly pesticide through a village to poison it? Therefore, there must be acquaintances between the criminal and the owner, and the two locations are not too far away.

The use of poisoning, and the fact that it was only used on livestock, shows that the offender is usually a reticent person. This person is on the fringes of rural society, that is, he has no right to speak, and no one listens to what he says. What is almost certain is that the offender is a woman, an elderly person or a teenager, and these groups are all vulnerable in rural areas.

A case that seems impossible to start in the eyes of the local police station is not difficult in the hands of Ren Qiuling. The suspect was quickly locked up and the case was successfully solved. Of course, solving the case is secondary, mainly because Ren Qiuling also has a special identity as a special expert of the Criminal Investigation Bureau, and imparting knowledge to grassroots investigators just reflects the value of this identity.

On the way back to Binjiang, Ren Qiuling received a phone call, it was her friend Xiaozhen calling, "Qiuling," Xiaozhen said nervously: "I don't know how you offended Gu Tongli, he has united many experts to prepare to retry the Binjiang corpse cooking case!" He insisted that the case was a wrongful conviction and was ready to overturn the original verdict and then investigate your responsibility -- at present, the criminal investigation department is implementing a reverse investigation system, and he intends to use you as a typical example of reverse investigation and make you ruined. You know, in my country you have done a thousand cases right, and no one remembers your goodness; If you get one case wrong, it's all over. ”

Ren Qiuling smiled, "Just him?" Ha! ”

After Xiaozhen gave birth to a child, she really looked more and more like an aunt, and she talked a lot, "Hey, I didn't say you!" After all, they are experts in the province, and to be honest, if you investigate a case with us for a year, it may not be as good as having a glass of wine with a big leader! Why did you offend him? He stayed in the province, and he had a few powerful friends! In today's society, power still changes lives, and no matter how hard you try, it's useless. ”

I didn't expect that the words "power changes life" would come out of Xiaozhen's mouth, and Ren Qiuling was silent.

Since she was a child, her parents who were in business let her watch "Sheriff Black Cat" and cultivated her hobby of detection. She always thought that studying criminal investigation was her hobby, and after graduating from college, her mother told her that it was actually a big chess game played by her parents. Her parents are both businessmen, and they both feel the helplessness of businessmen in society, and hope that someone in the family will support them.

Mother said: "Chinese culture is the culture of the official standard, you see the ancient scholars, hard work all their lives in order to win a fame, Li Bai is like this, Du Fu is like this, Su Dongpo is the same." It's the same now, even if you're a billionaire, it's nothing in society. As long as a small section chief can easily play you to death. ”

Now she is also in the public house, but where can she help her parents?

Xiaozhen on the phone didn't know how many words she said, only to realize that something was wrong, and said unhappily: "Hey, hey! Have you listened? ”

Ren Qiuling said, "Hey, I'm listening." ”

Xiaozhen said: "Tell me, Binjiang cooking corpse case, are you perfect to solve the case?" ”

Ren Qiuling thought about it and solemnly told Xiaozhen: "Any case I solve is not a perfect case. The Binjiang cooking case is even worse. Gu Tongli specially picked this case to find my stubble, although he has no ability to solve the case, I still have to say: he found the right case. ”

The Binjiang corpse cooking case was solved by Ren Qiuling independently, so it did not involve other criminal investigators; At the same time, there are many suspicious points in this case, many of which have not been implemented -- and even the murder weapon has not been found.

Two years ago in the summer, a few waste pickers found a large half-used suitcase in a landfill, felt that it was useful, and planned to throw away the contents of the suitcase and take it back to fill it. The suitcase was well locked, and several men took great difficulty to open it, and a human head rolled out of it, scaring them to the core.

Hiding in the suitcase was a corpse that had been cut into several large pieces, but it had been cooked and then left in a landfill for several days, half-decomposed. The features on the surface of the corpse have disappeared, and it can be seen that it is the corpse of an adult male. The medical examiner boiled the body again and calculated that the deceased was about 1.8 meters tall by the length of the leg bones - a rarity in Binjiang, which is a southern city and the southerners are shorter. The reconstruction of the skull shows that the deceased was handsome and a beautiful man.

After Ren Qiuling took over the case, it was determined through the cut marks on the deceased's bones that the murderer's strength was not great. Because the heart of the corpse was pierced like a hornet's nest, she judged that this was a hate crime, that is, the deceased knew the murderer, and it was certain that the deceased and the murderer were both Binjiang locals.

Such a case itself is not complicated, as long as the identity of the victim is ascertained and his social connections are checked, the case can be solved quickly. It is true that the victim was so eye-catching, and it was soon found out that he was Hu, an employee of a garment factory in Binjiang. However, although this guy is good-looking, he is definitely not a good person, he usually bullies men and women, does evil, and has many enemies.

If the traditional way of handling cases is followed, then the facts can be ascertained after three or five months. Ren Qiuling said no, just investigate people whose behavior has changed significantly before and after the crime.

Killing someone is definitely not a pleasant thing for the murderer, and he is also under tremendous pressure. So he may suddenly change his image, for example, a person who usually loves cleanliness suddenly becomes raunchy; It is also possible to comfort oneself with the help of religious beliefs, and suddenly become diligent in incense; He may show a special interest in solving the case, pull people to talk about the case, etc.

As a result, the suspect was quickly locked, and it turned out to be Jia Chunshui, an employee of the same factory. After interrogation, Jia Chunshui quickly confessed to his crime, it turned out that he had been bullied by Hu for a long time, and finally couldn't bear it anymore, killed Hu and then cooked the body, divided the body and threw the body.

The suitcase was indeed owned by Jia Chunshui, and the iron pot in which the body was boiled was also his, but the key evidence of the murder weapon -- Jia Chunshui confessed that it was a utility knife -- was not found.

There are also suspicious points in the process of committing the crime: Jia Chunshui is only 1.52 meters tall and has a thin physique, while Hu is 1.81 meters tall, how did Jia Chunshui kill the tall and powerful Hu by himself? According to Jia Chunshui's confession, after Hu beat him, he stuffed the work into his mouth, and he suddenly stabbed Hu when he was intoxicated and killed Hu. Of course, this possibility is not impossible, but the forensic photos at the scene show that the wound on Hu's neck is shallow on the left and deep on the right, that is, the blade is swung from left to right, and Jia Chunshui is not left-handed.

When two people stand opposite each other, the right hand swings the knife, and the wound caused should be shallow on the right and deep on the left, which is inconsistent with the situation of the corpse.

Although there are many doubts that have not been implemented, it can be proved that the dismemberment and cooking of the corpses were all committed by the suspect, and the suspect confessed to his crime and had a confession, so the case was closed.

Of course, Ren Qiuling was indeed a little careless in this case, but it was difficult for outsiders to understand how much work she had at that time, and when she closed this case, there were still more than 100 unidentified cases on her desk.

As the dishwashing theory says: people who wash more dishes also break more dishes, and people who don't wash dishes will never break dishes, so they feel that they are qualified to scold people who wash dishes. This theory shows that in an office, the person who does the most things will always be the one who scolds, and the person who does the least things will always be qualified to scold others.

Just like Gu Tongli, he has never investigated a case, and of course he will not make any mistakes, so he is more qualified to blame Qiu Ling.

Ren Qiuling had no bottom in her heart, and she also wanted Lee Myung-bak to help come up with some ideas, but Lee Myung-bak's phone couldn't get through, so she could only rely on herself.

After returning to Binjiang, she transferred the file of the corpse cooking case, and the more she studied, the more weak she became. In this case, the key point is Jia Chunshui, if he insists that he will kill Hu, he will have a chance to win - but after two years in prison, Jia Chunshui should have suffered a lot, he should have changed his mind, right?

Thinking of Jia Chunshui, a pocket man, Ren Qiuling's eyes were a little moist. Because of his short stature, Jia Chunshui especially wants to gain respect, so he pays attention to his clothes, he wants to look older than his actual height, and likes to wear bright colors such as purple and red. He walks with exaggerated movements and speaks quite loudly - all to make himself feel bigger.

He really wanted to give the impression that he was a man with revenge, not a poor worm who was forced to do so, so he confessed to killing someone.

Ren Qiuling knew that if she saw Jia Chunshui, she could make this pocket man stick to his original confession with a little psychological hint. But is it really going to be done? No matter how unbearable Jia Chunshui's life is, it is not necessarily lower than his own life! Ren Qiuling felt that there was no need to sacrifice others to fulfill herself, she had mustered up the courage and was ready to accept all the slander and slander!