When Xia Liang was not on duty, he installed the police car lights on his white Accord.

Alternating red and blue police lights streaked across the road and galloped all the way.

"Hey, Team Xing? It's me, Xia Liang...... Yes, that's right...... Brother-in-law he ...... With a new discovery......"

The task force that had just finished sorting out the scene and was preparing to close the team had all received instructions to be on standby. Waiting for Zhu Ansheng to come over.

Everyone has a little apprehension in their hearts.

"Wishing Detective" a new discovery, which is important news for everyone.

At a time when the morale of the people is generally low, this is undoubtedly the best dose of strengthening.

It can even be said to be a sharp sword that pierces the heavenly vault in the endless darkness and brings the dawn.

Before the white Accord stopped outside the Huangsha Seafood Market, Zhu Ansheng had already opened the car door and rushed to the cold storage in a hurry.

Xia Liang, who was still wearing the wet police uniform, smiled helplessly.

Crossing the cordon, he was greeted by Xing Guangkun who was guarding the door.

Xing Guangkun was also shocked when he saw the haggard look on Zhu Ansheng's face.

"Lao Zhu, why were you squeezed into an adult?"

Zhu Ansheng shook his head, without the desire to explain, he turned his head and glanced at the dense moss on the wall of the cold storage, and a bright light appeared in his eyes.

"I'll tell you the murderer's true secret room methods."

After that, he walked straight to the cold storage, Xing Guangkun looked at his back and sighed silently.

The cold storage has turned off the electric switch, and several criminal policemen have been waiting inside with flashlights for a long time. The ground was wet, except for the footprints left by the suspect, and there were footprints of the criminal police everywhere.

Zhu Ansheng wore a blazer on his body and squeezed out a smiling face:

"Friends, do me a little favor, let's restore the secret room to a closed state first."

A few people nodded, seven or eight criminal policemen moved the shelf next to the door and pushed it to the cold storage door, and another person picked up the plastic box on the ground and put it on the shelf.

This is equivalent to reverting to the state of the double secret room when the two suspects woke up, unable to break through inside and outside.

Seven or eight flashlights shone on Zhu Ansheng's body, and Xing Guangkun's voice sounded in the dark:

"What are you going to do next? What is the secret room technique you want to prove? ”

Zhu Ansheng shook his head and said:

"Before I do that, I want to help you sort out your thoughts."

"So far, everyone should be on the same page about the secret room methods used by the murderer. Someone outside the door answered and was responsible for using the key to open the cold storage door, while the person inside played the role of the deceased to induce the two to move the shelves, and then used the plastic box on the top to create the illusion of a double secret room. In fact, this is not a double chamber in the true sense of the word, because the key point in the formation of this chamber is the simple trap made by the plastic box, which takes advantage of the height difference between the door and the shelf, and people who do not know the existence of the box will definitely knock over the box and wake up the two suspects who are asleep. ”

"If the murderer knew about the existence of this box from the beginning, as long as the two of them fell asleep, they took the box down, called on their accomplices to push open the shelf together, completed the murder, and then restored the scene, and this secret room would no longer exist."

A few criminal policemen, you look at me, I look at you, and they all nodded. Speaking of which, this inference was first put forward by Zhu Ansheng himself.

Zhu Ansheng took a breath and said:

This method is theoretically valid. But there is a big premise here, that is, the number of people involved in the murder must not be less than three. The reason is simple, because this shelf is quite bulky, and no three people can't push it at all. ”

Xing Guangkun was silent for a while and said:

"I heard Xia Liang say that you don't seem to agree that the murderer was committed by a gang, and you think there are only two murderers at most...... Is there any basis for this? ”

"The biggest basis," Zhu Ansheng chopped the floor and pointed to the ground: "It's the string of footprints left by the murderer." ”

"The snow melting time in the cold storage has been measured once, about two and a half hours. If the murderer is really a gang, he only needs to notify his accomplices by phone after stuning the two suspects again, push the shelf together, and then hold the body of the deceased and leave fingerprints on the shelf, and then hug the two suspects back to the vicinity, destroy the bodies, and then quickly restore the scene and leave directly. There was no need to leave footprints at all, and it definitely didn't take that long to retreat when the cold storage began to melt. ”

Xing Guangkun frowned:

"Your speculation is too subjective. After all, no one knows what happened in the cold storage that night, and the most important thing is that the murderer probably didn't know the snow melting time in the cold storage, and he couldn't make such a careful plan, and it took more time than expected to move the body and leave fingerprints, leaving flaws. ”

Xia Liang's voice also came out:

"Brother-in-law, you have always emphasized that the murderer is a genius with a very high IQ, but no matter what, no one is perfect, and it is not surprising that there are some mistakes in the details...... You yourself said that the murderer didn't have that much time, maybe it was because he was in too much of a hurry that he didn't take these details into account......"

"Impossible." Zhu Ansheng suddenly interrupted and said coldly:

"The murderer is not just a genius with an extremely high IQ, he, or rather, they ...... They are extremely thoughtful, they think about things, and they pay attention to much more details than we can imagine. This series of footprints was not left by the murderer because of negligence, in fact, it was because he had to stay. ”

The criminal policemen were all confused, and they couldn't understand what Zhu Ansheng said for a while.

Zhu Ansheng stopped talking nonsense, took off his leather gloves, and put them in his blazer.

"I'll show you once, and you'll understand."

As he spoke, he shouted again:

"Xia Liang, come here."

Xia Liang pursed his lips, didn't speak, and stepped forward.

In the light of the flashlight, he first reached out and removed the plastic box above his head, and then asked casually:

"Listen to Xia Liang, when you carry the shelves today, seven or eight people can't push it, right?"

The criminal police over there responded:

"Yes."

"The ground is so slippery, and when you push your feet, it slips, and you can't push it."

Zhu Ansheng moved his muscles a little, and said with a smile:

"Have you ever considered a detail that actually happened......"

"After the truck driver woke up the security guard and the aquatic product shop owner in the cold storage by tapping on the roller shutter door, there were only two living people in the cold storage, but they still pushed open the shelves and banged on the door to call for help......"

This fluttering sentence fell on everyone's ears, and every criminal policeman's heart was like a thunderbolt.

In the eyes of everyone, Zhu Ansheng walked alone to the shelf blocking the cold storage door.

He took off his blazer. Lay it on the ground, stepped on it, rubbed it vigorously for a while, and threw the clothes aside.

The water trail on that floor had been wiped dry.

He stepped on his right foot, stepped on the wall by the door with his left, broke the edge of the shelf with both hands, and exerted force on his feet and hands at the same time, and snorted.

The bulky shelves were really slowly pulled by him, and gradually a gap appeared that could accommodate one person in and out.

Zhu Ansheng got into the gap, grabbed the closed doorknob, and pulled it to the right, and the dazzling light shone into a dark cold storage.

The criminal policemen in the cold storage were silent, and they were speechless in shock.

Zhu Ansheng returned to the cold storage, faced everyone, put one hand on the shelf, panted and smiled:

"As long as the method is appropriate, this shelf, in fact, can be pushed by one person."

"Secret...... It's about friction. ”

"It doesn't take three people to push this shelf. As long as you make good use of the simple friction force, one person can push it, and if it is two people, it is even easier. ”

"When the snow melts in the cold storage, the ground is damp, and the friction on the floor is reduced, and walking on it is basically like walking on ice. In this case, it is naturally more difficult to move the shelves - because without friction, there is no way to exert force well. ”

"But if we think about it the other way around, friction can also help us do the opposite – because the friction on the ground is less, the 'force' needed to push the shelves is also reduced, in which case we just have to find a way to increase our own friction on the ground."

"The easiest way ......" Zhu Ansheng smiled: "It's to wipe the wet floor like I did just now." With friction and friction, one person can do what would have taken three people to do. ”

His smile narrowed, his eyes narrowed.

"So, the murderer didn't leave footprints on purpose, but had to leave footprints."

"Because he has to wait until the snow melts in the cold storage, and when the friction under the shelves becomes smaller, he can leave the cold storage and complete the layout of the double secret room."

The criminal policemen were still digesting this shocking piece of information in their hearts, and Zhu Ansheng stretched out his index finger and hooked it towards Xia Liang.

"Liang, come out with me, and we'll restore the double secret room. Let's come out with the big guys. ”

The criminal policemen walked out of the cold storage one after another, under the command of Zhu Ansheng, Xia Liang picked up the plastic box on the ground and held it above his head, and then, Zhu Ansheng repeated the old trick, wiped the ground in front of the door, stepped on the wall outside the cold storage, and pulled the shelf in the direction of the cold storage door.

Until the gap between the shelves and the door became narrower and narrower, and one person was not enough to pass through, the plastic box also happened to be sandwiched between the shelves and the door.

In this way, the double secret room was smoothly restored by two people.

"That's the basic situation." Zhu Ansheng patted his palm that was red by the iron frame, and stretched out his hand to point to the wall outside the cold storage door.

Recently, there have been showers in Guangzhou, and the seafood market is always damp, and the walls are covered with moss. Only the part that Zhu Ansheng has just stepped on is free of moss.

"This part of the moss has been artificially removed, and if you don't pay attention to it, no one can see it."

Zhu Ansheng said calmly:

"That's what I'm talking about, and there are only two people who can prove the murderer...... The biggest evidence. ”

Xing Guangkun took off his police hat and pinched his eyebrows helplessly.

"It's sensational."

Xia Liang looked at Zhu Ansheng silently, clenched his fists, and had nothing to say.

Zhu Ansheng nodded and breathed a sigh of relief:

"The murderer chose the crime scene in this cold storage, which was quite cleverly calculated. The low temperature of the cold storage was used to allow the forensic doctor to misjudge the time of death of the deceased; He also took advantage of the lack of light, disguised as a deceased, and created a double secret room in the true sense - finally, he used the melting snow in the cold storage and the change of ground friction to crack the double secret room. ”

He sighed and continued:

"The most subtle thing about this layout is that the most important clue to his technique, the wet ground, will slowly disappear over time. Because when the deceased is found and the criminal police arrive, in order to maintain the integrity of the scene and the accuracy of the investigation, the electric gate of the cold storage will definitely be reopened and re-cooled. When the temperature drops, the moisture on the ground will gradually disappear. The murderer took advantage of our habitual thinking to cover up his modus operandi. If it weren't for Xia Liang accidentally telling me today that the cold storage turned off the electric switch, and seven or eight people couldn't push the shelves, I wouldn't have thought of this layer at all. ”

Lao Lin, who had been watching the whole process of solving the case, shook his head and sighed:

"I wish this guy is really not old......"

Zhu Ansheng looked at him and smiled angrily:

"your rainbow fart. Rather than that, you should worry about what to do in the future. ”

Xing Guangkun nodded and said with a solemn expression:

"Lao Zhu guessed well, this time we are not an ordinary thief and thief, from this modus operandi alone, it can be seen that the murderer is thoughtful and has excellent brainpower. We have to be cautious. ”

"Maybe it's a little more serious than you think." Zhu Ansheng suddenly said with a wry smile.

"You know, this kind of layout, this modus operandi, could have been completely seamless. As long as there are more than three perpetrators, and it takes a little time to pick two more suitable scapegoats, all the flaws can be perfectly covered up, making this case a complete unsolved case. We are still far from the final truth, and the reason why we were able to crack this secret room method was purely because the murderer did not have enough time. ”

Xia Liang frowned and thought for a long time, and said:

"At least we have now confirmed the scope of the murderer's suspicions, and the number of people involved in the crime is only two people at most, and they have a considerable degree of knowledge of this cold storage, or rather, the surrounding area...... Moreover, it should have a certain degree of relationship with the deceased Fu Sizhe......"

At this point, his eyes widened suddenly.

"Wait......"

Two people. Have an understanding of the Huangsha seafood market...... Meet Fu Sizhe......

Xia Liang couldn't believe the thoughts that had quietly spawned in his mind.

"How is that possible...... Those alibi ......"

Zhu Ansheng glanced at him deeply, sighed silently in his heart, and slowly spoke:

"You should be more or less aware of ......"

"The second round of this game has just begun."