Everyone looked at Shen Yu, and she looked at everyone without shying away, and then continued to analyze.

"If it had been before," she rephrased, "I would have quarreled with that kind of schoolmate." But after the car accident, I suddenly thought that in this world, arguing is the most meaningless, unless the truth is thrown directly in the other party's face. ”

"What are you two talking about?" I don't know what kind of dumb riddle they played, but the second monk asked, "What is the truth?" What do you see? ”

"That's it, Team Lin, what the hell is going on?" Xiao Yu also urged.

Lin Ying looked at Xiao Yu and smiled: "Do you remember Lu Xianheng's autopsy results?" ”

"Remember, drowned."

"How did Ju Xincheng judge this result?"

He said that Lu Xianheng had drowning fluid in his trachea, alveoli and gastrointestinal tract, diatoms in his teeth and mouth, mud and sand in the water, and scars on his body struggling in the pool. Therefore, Lu Xianheng did not throw his body into the water, but drowned in the pool of Xinyunli. ”

"Why did he decide that the death had occurred in the pool of Xinyunli?"

"Didn't the drowning fluid and diatoms from the deceased be extracted for examination? In the end, I found that the composition of the water was exactly the same as that of the pool. ”

"If the murderer drowned the deceased with the same water, would the same ingredient?"

"Ahh Xiao Yu and I shouted almost in unison.

I suddenly remembered that the day before yesterday, Shen Yu had stayed on the lawn in Xinyunli for a long time, and she had examined the traces on the lawn, and she was very concerned about the unknown marks on the stone slabs—now it seemed that she had guessed that it was a drop mark of the pond water.

Later, she deduced about the wheelbarrow, and where she found the wheelbarrow, there was not only a pool, but also a large plastic water bag that had been cut into tarpaulin......

Could it be that the murderer took water from Xinyun and transported it here in advance, causing a pool of the same water quality to fail?

In this way, the location of Lu Xianheng's death can be faked, and more importantly, it can also cover up the cause of Lu Xianheng's death - disguising the drowning of a person into the water as an accidental overboard.

However, there is another problem, I remember that the case file records said that at that time, only Lu Xianheng's one-way footprints were found near the Xinyunli Pool.

If the murderer drowned Lu Xianheng at Zhenzhao's house, and then threw the body into Xinyun, then what could be found was not Lu Xianheng's footprints alone, because the murderer still needs to go back after throwing the body, then there must be at least two lines of footprints!

I couldn't help but throw this question out, but I didn't expect Shen Yu to say calmly: "It was the existence of those footprints that made me realize that Lu Xianheng's death was problematic." You've also seen the dossier – the photographs of the site survey show that Lu Xianheng's footprints were only left in a small area near the pool, and the soil in that place was so soft and loose that anyone who stepped on it would get imprints. However, whether it is close to the pool or far away from the pool, the pavement is paved with stone slabs or cement bricks and hardened, so it is difficult to print footprints.

"On the other hand, there aren't many places where you can put your footprints on it. If there is a murderer, as long as he wants to avoid it, he can completely avoid the narrow area and throw the body from the hardened ground. But the murderer didn't do it, the murderer is not a textbook, he won't take the initiative to leave a reminder for the police, but why did he do it? Because he wants to create a false impression and divert our attention.

"Let's think about it, Lu Xianheng lost money that night, he was depressed and depressed. If the murderer wants to create the illusion that he is suicidal, he must act like a suicidal person......"

"I see, it's those chaotic footprints!" Xiao Yu also suddenly brightened.

"Footprints are silent, but they convey a lot. The murderer wears the same shoes, and he doesn't need to do the trick of 'stepping on the footprints slowly' in mystery novels. Because the more chaotic the footprints, the more normal they are, more like the mental state of a person who wants to die. This is the first oblique effect produced by footprints.

"The second effect is to divert the attention of investigators. The intermittent wheelbarrow ruts and water droplet prints on the lawn of the Xinyunli community are not in the same direction as the footprints. Footprints are naturally the most important clues, and the lawn of the community is already full of people, as long as you look away, the police will not pay special attention to some 'irrelevant' traces in the other direction. ”

Shen Yu finished speaking in one breath, and then spread his hands and said: "This is where the murderer is clever, and he has a higher cleverness." ”

"What is it?" I asked.

"Is that the purpose of the crime? Why did he kill these three people, was it just because they were the scourge of Yuntang Town? Even if they have their own stains, they will not sin unto death. ”

"They did annoy some people, but it did not affect the interests of most people, if it really became the 'three evils of Yuntang', I am afraid that the villagers would not be able to tolerate them for a long time."

"We've only discovered the means of committing the crime now, and if we can find out the purpose of the crime, we can catch the key clues."

"That's right, that's called 'Those who are good at opening the net lead to their outline; Don't take them all and then get them'. I agreed, "You haven't said anything about big fish eating small fish!" ”

"You, sometimes you're open, sometimes you're confused—look, the wheelbarrow tires have been cleaned, and the plastic water bag has been cut into tarpaulin, does the murderer still have a pool of water for killing?"

"Understood, in fact, the pool of water is the direct murder weapon, and it is also what the murderer wants to hide the most, so he drained the water and washed the pool. But he was still afraid that there would be algae residues in the pond, so he stocked small fish to eat algae, and after eating for a period of time, he stocked snakehead to eat small fish, eating and eating, and finally the entire water quality environment changed...... Is that right? I said it in one go.

A few people nodded approvingly at me, and Xiao Yu gave me a thumbs up and said, "Follow Teacher Shen, I have really grown." ”

"But we still need confirmation from our technicians," Lin Ying added, "and when the physical and chemical results come out, the truth will be completely revealed." But so far, Mr. Shen's reasoning is the best way to explain all the doubts. ”

"But there is still a question," I said, "if the murderer made the deaths of Lu Xianheng and Luo Laosong an accident, why did he make Shang Weimin an obvious homicide?" Is it possible to 'hitchhike' killing? ”

"No, it won't." Shen Yu said bluntly, "The three cases must have been committed by the same murderer - Shang Weimin's hanging was more like an accident." ”

"Don't hurry up then! Let's go to Yuntang Street, where Shang Weimin disappeared, to investigate! I said.

"No, Shang Weimin's death is actually related to a contradiction in Lu Xianheng's case, so I want to go to Luo Laosong to understand the situation." Shen Yu said.

I fainted all of a sudden—why did Shang Weimin's death have anything to do with Lu Xianheng? But what about the situation to be checked by Luo Laosong?