"At that time, I had no way of knowing what the water and sand did. Liu Hang's tone was full of self-blame, and Liu Qiaopu said: "You have worked very hard, don't take this kind of thing to heart, let us solve it!"

Liu Hang shook his head and said: "But now I know, grandpa, although there are many things that I haven't sorted out yet, there is one thing that I know very well, that is, the crisis, the sense of crisis brought by these sands, grandpa, I think the only role of sand is to destroy the walls, but not the walls of the second and third floors, but the first floor." The sand on the second floor absorbs enough water, and the weight of the walls on the third floor must crush the first floor. ”

"Anyway, we have to go back to the first floor now, get those people out of the treacherous house, or hide in a hole in the rock, and then find a way to solve the case." Liu Hang gave what he thought was the most appropriate plan, what he said before, although it was a little chaotic, but Liu Qiaopu and Xie Yunmeng could roughly understand what he meant, the sand must be spread all over the wall, and the water in the water tank would probably have pipes to guide all over the wall.

According to the principle of water flowing low, it is impossible for the water to flow to the third floor, but only inside the walls of the second and first floors, the first floor is a brick structure, and the bricks do not absorb water so quickly, that is, the sand in the walls of the second floor has absorbed all the water. It is no wonder that the second floor was built into a large hexagonal room, except for the movable walls used by the mechanism and the water tank, the walls around the entire hexagonal hall are all a combination of thin wooden planks and sand.

After the sand absorbs the water, the walls on the second floor will at least 1 to 2 times more weight than the original, not including the floor, if there is also sand in the mezzanine of the floor, plus the weight of the third floor, those load-bearing walls on the first floor will definitely not last long. At present, it seems that Liu Hang is right, all these organs are just to crush the first floor.

But there are many questions here, first of all, according to the above reasoning, there can be no sand in the tank, and the water flow cannot flow to the wall at the entrance, why does Liu Hang disassemble the surface plank, he will feel that there is sand on the wall of the plank and the water tank? One thing to be clear here is that although the top of the tank is not connected to the roof, there are no chips and cracks in the walls of the tank, so where does the sand come down?

The first guess is that the sand was brought in from inside other walls when the water in the tank shook or flowed back, and then slid down from the top of the tank with the current, but the amount of sand that flowed out in this way could not be large, and it was impossible to flow onto the outer wooden plank separated by a small space, so the guess did not match the facts found by Liu Hang.

The second speculation is that the sand was splashed on the outer wooden planks and water tank by someone and the water tank in order to make the criminal police doubt and cover up the truth. This speculation is possible, but if water and sand are splashed, there should be residues on the ground, but Liu Hang did not notice these things on the floor at all.

Secondly, the walls around the hexagonal hall are all in the same parallel space, and the location of the water tank, according to the description, should occupy all the space behind one of the walls, and the water is directed out in parallel, and it is impossible to direct all the water in the tank regardless of which part of the tank is installed.

Unless the water pipe is installed at the very bottom of the tank, and the water is poured directly into the tank from above, the impact force is used to press the water directly into the open water pipe, so that the sand can absorb enough water faster.

Finally, if the walls of the first and second floors are crushed, the third floor will definitely not be able to be saved, so what is the sand in the walls of the third floor for? Is it just to add weight? I'm afraid it's not that simple, when you checked it just now, you found that the sand has two characteristics, the first is cold, and the second is dry.

When we went up to the third floor, it was warm in the hallway and in all the rooms, and it was not known whether the air conditioner was on all the time or if someone had turned it on beforehand. If the air conditioner is left on all the time, the sand on this side of the room cannot be cold.

However, the air conditioner will absorb the water and keep the sand dry, and the snow outside is so heavy, and depending on the cold of the weather, the sand that absorbs enough snow water will inevitably freeze. If the air conditioner is turned on temporarily, even if the sand on the side near the room thaws in a short period of time and flows out of the wall, it will not be dry.

So, to keep the sand cold and dry, it is very important that the air conditioner is turned on for a very long time, neither too long nor too short, and it is difficult to tell when exactly the air conditioner on the third floor has been running!

Liu Qiaopu agreed with Sun Tzu's suggestion, and he also believed that everyone should hide in the rock hole first, because no matter how the rock is, it is impossible to be crushed, and the hole is not directly below the main house, and a large part of it is below the ground between the main house and the side house, so even if the house collapses, it will not be affected too much.

But Xie Yunmeng was still hesitating, he felt that there were too many secrets hidden on the third floor, and he could get a lot of information from the two black diaries they found. If the murderer wanted to crush the house and let them all die here, they could have done it a long time ago, so why bother activating the mechanism after they have investigated so many clues?

If there is a chance, in the previous chaos, the murderer had many chances, and he himself could escape from the main house without realizing it. Now, Yun Yeyao has not woken up, Xie Yunmeng can't make an arbitrary decision, perhaps, after they leave, the murderer will destroy all the evidence left in the main house, including the traces of those organs.

Xie Yunmeng said: "Teacher, Xiaohang, the people who are on the periphery now, except for the grocery store owner and his wife, there is only Man Man, Man Man has helped us so much, she can't be the murderer." Therefore, the suspect should be in this main house just like us, and he may want to use this method to destroy all the murder scenes and agencies, so that we have no way to investigate. ”

"Otherwise, why didn't he activate the sand mechanism beforehand, and easily wipe us out before we even found out about the case. If he has to wait until now, it means that he doesn't want to give up this house easily at all, I think there are many elements to scare us, my opinion is that everyone retreats to the first floor of the tower, and then discuss it after Xiao Yao wakes up, even if the sand on the upper floor crushes the first floor of the main house, it will not completely affect the tower, we still have a place to hide. ”

"But, Officer Xie, you're sure? Wasn't the grocery store owner couple or Vinmanman? What is the purpose of Wermanman helping us? It's too dangerous to stay in the main house, I think the suspect has reached the point of being extremely vicious, and Xiao Yao's investigation method makes him afraid, so he jumps over the wall in a hurry. ”

Regarding the different suggestions of the two people, Liu Qiaopu thought for a while before saying: "Xiaohang, what Xiao Meng said is also a compromise solution, otherwise would it be like this?" I, Xiao Meng, and Xiao Xiao stayed in the tower to keep watch, for the time being, the tower and the secret passage should be fine, and the rest of you take Xiao Yao into the bell tower, which is a certain distance from the main house, but not too far. ”

"If it's okay, you guys will come back, if you find something wrong, we can run into the bell tower in time, in short, for everyone's safety, we must take precautions, but Xiao Meng's opinion is also reasonable, we can't easily let the murderer destroy the murder scene."

Yanagihashi's words were recognized by everyone, and she never expressed an opinion except for the horror on the ground, and lowered her head, as if she had given up all resistance. At this time, Yun Yeyao was slowly waking up, the wounds on his head and back were not deep, and he had already taken medicine, and the bleeding condition was gradually improving.

Xie Yunmeng felt the slight movement of the person in his arms, quickly straightened his upper body a little, and asked, "Xiao Yao, Xiao Yao, are you awake?" ”

"Hmm...... Xiaomeng, Xiaohang...... Only half of the words were right......" Yun Yeyao's faint words reached the ears of everyone present, and for a while, the room was silent, everyone wanted to hear it, Yun Yeyao's reasoning, Liu Qiaopu helped Liu Hang to sit on a chair, and then walked to Horror's side to prevent her from making any sudden actions.

The house they were in still felt very solid, without any shaking, and the sound of wooden planks shattering came out, so although it was said that the house would collapse, from everyone's psychological level, they were still waiting for Yun Yeyao to fully wake up.

In fact, most of Liu Hang's words Yun Yeyao heard in a daze, his gray brain cells did not stop working, and next, Yun Yeyao was going to make her reasoning about the sand, and it was a completely different reasoning from Liu Hang, in this part of the reasoning, the real use of the sand will be shown in front of our eyes, including plastic surgery into a little maid horror Anqian why she went back to the third floor again, and part of the past she experienced.

Of course, except for the reasoning part, Anxi's own past will be told by herself, but Yun Yeyao will use some methods to pry open Anqian's mouth that has been kept closed until now.

In addition, in the restaurant, Wen Manman will also get some unexpected clues, and Yan Muheng on the first floor will change again, with Wen Manman returning to the inside of the rock bottom cave and the ruins of the side house, they will get traces of Eternal's actions, and they will also get a preliminary glimpse of some of the secrets and wealth of An Ze himself.

The case has been narrated so far, and the reasoning chapter is getting closer and closer, and the stories behind each person are gradually put together, and when these stories are all put together like a puzzle, the complete reasoning will be officially presented in front of us, opening the door to the truth of the entire chaotic case for us.