Chen Fan ran to my side and asked me what was wrong, I gave Luo Feng a look, and he immediately took out two people to find Yun Gao. The number of police officers who came was not more than Luo Feng's subordinates, and the police had no way to look at everyone, but whether it was Luo Feng or Daxi's subordinates, they didn't have a hard time with the police, and it was not good for anyone to make a big fuss.

Li Deshui was already completely panicked, he struggled desperately, shouting why the police caught him. I put my mouth close to Chen Fan's ear and said something to him. Chen Fan was a little excited, he and the police came, and the role of solving the case naturally became Chen Fan. To be honest, I had been waiting until Chen Fan brought good news, and I wasn't sure if I could convict and arrest Li Deshui.

If I were sure, I would have just done it and tied him up first.

The good news brought by Chen Fan also made me breathe a sigh of relief. After Chen Fan listened to my words, he walked up to Li Deshui who was struggling with some pride, Li Deshui stared at Chen Fan and asked him who he was. Chen Fan pretended to sneer and said, "The one who wants to send you to the judgment seat!" ”

Li Deshui's face was ugly, and the few policemen who took the lead in the port area were still at a loss. Everyone had guns in their hands, and none of those present dared to act rashly. A few policemen asked Chen Fan what was going on, and before Chen Fan drove them over, I briefly repeated what I said to everyone.

Chen Fan only listened to me roughly once, so he didn't understand what he said very clearly, and looking at the expressions of those policemen, he was also confused. However, when it came to the point, Chen Fan finally made his words clear. The evidence that gave the police the confidence to dispatch so many people to arrest Li Deshui was a hair dryer for drying hair in the rental house.

When Chen Fan said this, I kept observing Li Deshui's expression. His brow furrowed, as if wondering what he had done with the hair dryer. There was nothing wrong with the hair dryer, the handle, and the body of the hair dryer, and there were no fingerprint traces or other Li Deshui's physical features.

Under Chen Fan's simple explanation, all the policemen roughly understood that the food in the stomachs of Lao Jiu and the others entered the esophagus between life and death. All the food was finely chopped, most of them were found in the stomachs of the old nine people, and there were some small amounts of food residues, which were found in the trachea of the old nine people, and that was because they choked on eating.

In other words, those foods were not eaten on the day of Chaoyang Ji's delivery. Lao Jiu and a few people, before they died, had been fed, and the next three days were just a cover to confuse everyone and want to attribute the case to ghosts and gods.

Lao Jiu and a few people, after swallowing those fine food, did not long lose their vital characteristics, and the digestive function of the stomach quickly stopped, so the food in the stomach of Lao Jiu and several people was only digested a little bit under the action of digestive enzymes, and the identification report given by the forensic doctor was: basically not digested.

The so-called freshness is only relatively speaking, in addition to the subtle digestion under the action of digestive enzymes, those foods also have a certain degree of decay, which is the result of the action of bacteria and putrefactive gases in the body, but because of the cold weather, the decay is also very subtle and not obvious. The degree of decay is also considered normal by the medical examiner.

Truth be told, if the medical examiner hadn't done an autopsy, the case might not have been so complicated. As soon as the forensic doctor gave the autopsy report, all kinds of inferences made people shudder. Because of the freshness of the food, it looks like the deceased swallowed it after death, and then connected with the three-day delivery of Chaoyang Ji, plus the food delivered is the same as the food found in the deceased's stomach, everything becomes weird.

Now, the trick of eating between life and death has been recognized, but the biggest doubt is still the previous question: how did Li Deshui deliver the food that had entered the esophagus through the pharyngeal organ to the stomach. At that time, the old ninety-four people were already too weak to do anything, and when the pharynx met food, they could have conditioned reflexes, and it was not easy for food to enter the esophagus, and in that case, their esophagus peristalsis was very subtle, which was not enough to send food to the stomach.

The biggest function of esophageal peristalsis is to deliver food to the stomach for digestion.

Li Deshui is a magician, and now that everything has become clear, what he relies on is only the two basic conditions on which his status as a magician depends: techniques and props. Everything was just a trick, and with that in mind, I could already figure out how he got food into the stomach of the deceased.

If ordering food is a confusion in terms of techniques and methods, then eating is the role of props. The water pipe, which Li Deshui used to fill food, was one of the props, and the hair dryer was another prop used to deliver food to the stomach of the deceased!

When the food passes through the pharyngeal organ, several dying victims are swallowing, at this time, they cannot breathe at the same time, so there is air flow through the mouth, most of the air flow will pass through the esophagus and enter the stomach like food, and only a small part will pass through the trachea, which may also be one of the reasons for their choking.

The effect of esophageal peristalsis still exists, but the force on food is not as strong as before. At this time, there is another air flow that leads to the same place, and the food is pushed after the food, and the food reaches the stomach very easily. Everyone's stomach capacity is fixed, so the volume of this airflow should not be too large, otherwise the stomach will be propped up and arouse the suspicion of the police.

Therefore, Li Deshui chose some smoother foods, such as noodle food. These foods, which have been finely chopped, are more likely to enter the stomach, and with a little airflow, everything will not be a problem. And the prop that Li Deshui used to create airflow was the hair dryer.

At first, I wasn't sure. However, the only tool that can be used to create air currents on the site is the hair dryer. When I stole into the crime scene, I kept everything in the house in my head. Li Deshui is still a little strange, he used the water pipe on the scene, but he didn't take it away, combined with this feature, I speculate that Li Deshui may not have taken away the tools used to create air flow.

So, the hair dryer quickly caught my attention.

Chen Fan became the focus of the audience, he was a little proud, and walked in front of Li Deshui with a smile. Chen Fan put his hands in his pockets and said to Li Deshui with a smile: "You are indeed very careful, after completing the crime, you cleaned up the scene without even leaving a little dust, but do you think that this will clean up all your physical features?" ”

Of all the physical features, blood stains are the most difficult to clean, even if they are scrubbed clean, they can still be restored with some technical means. But Li Deshui did not leave traces of his blood at the scene, and the police had no way to start from this aspect. As for fingerprints and footprints, as well as fallen hairs, dripping sweat, etc., they can all be cleaned up.

With the criminal science technology of the late 20s, there is no way to restore these physical characteristics. The scene of the murder is indeed so clean that there is no dust, maybe Li Deshui left traces at the scene of the crime when he committed the crime, but he was definitely more careful in the process of cleaning up the scene, which made the police traceless.

Li Deshui's face was gloomy, and the suit on his body became untidy. Chen Fan continued with a smile: "Skynet is magnificent, negligent but not leaky, how many murderers think that they are a genius and can master the law of murder, but there has never been anyone who will not be negligent, looking at your appearance, I still don't know what the problem is." ”

Li Deshui still didn't speak, he was still on guard. I could see through his mind at a glance, and he was afraid that the police and I were just pretending to lure him into confessing. However, Chen Fan's next sentence made him completely dead, Chen Fan said word by word: "You didn't expect that the airflow on the front of the hair dryer was blown out, but the airflow on the back side of the hair dryer was a suction force for you!" ”

Li Deshui's whole body trembled, and I also raised the corners of my mouth. Even people who don't know the principle of the hair dryer, according to common sense, can know that on the back of the hair dryer, there will be a suction, the closer the person's hand is to the back of the hair dryer, the stronger the suction will be felt, and the farther away, the feeling will not be so strong.

Because of the distance, the size of the suction force is also different, and the size of the force felt by the human hand is different because of the distance between the human hand and the mass of the human hand itself. However, if the object of action is replaced by a hair, the force is affected by the distance, and it is even smaller, because the hair is very light, so light that it is almost negligible.

This is also the reason why many people find that even if the hair dryer is used in a clean place, no matter how carefully it is used, there will be a lot of dirt in the wheel on the back after a long time.

When Li Deshui was creating airflow, he must have held a hair dryer in his hand, and his body was facing the back of the hair dryer. There are a lot of fine hairs on the human body, and when the hair dryer is running, the suction generated from the back of the hair dryer sucks the hair on Li Deshui's body into it.

Li Deshui carefully cleaned up the scene afterwards, but he didn't expect his hair to be sucked in by the hair dryer.

hair, which can detect human DNA.

I asked Chen Fan to take a hair dryer to identify it, just to test all the DNA traces in the runner on the back of the hair dryer to see if there was Li Deshui.

The adventure was successful, and the appraisal results of the appraisal department found Li Deshui's DNA, which became the key evidence to send Li Deshui to the trial seat for conviction.

Our eyes were all on Li Deshui's body, he lowered his head, his shoulders suddenly trembled violently, and when he raised his head again, Li Deshui was fierce.