I felt nauseous in my stomach and almost vomited out all the breakfast food.

She patted me and said comfortably: "Don't forget what the old man in Zhu family said, the child had a problem with his mind, just like a kitten and a dog, he didn't understand the worldly ways. The old man in Zhu family might not have enough food. He would often go to the garbage dump to pick up food. Maybe that day he felt that he had gained a lot because he picked up a big piece of meat..."

"Stop talking..." I waved my hand at her.

"So, we have to find a way to find the import and exit of the Weizhai Secret Room and rescue this child. Don't blame me for always putting the blame on you. I no longer have the ability to discover the 'logical singularity'. I am still adapting and have little confidence in many things. Also, I feel very guilty about what I said yesterday, and I don't know why I suddenly told all my flaws - I hope that after the case is settled, we will have the opportunity to have a good talk."

"Okay, don't worry, leave me the matter of finding a secret room," I said to her.

At this time, a police officer happened to come out of Wei's house. He shook his head at Lin Ying and said, "This house seems to be fine. The size of the inner and outer contours is relatively natural. The detection echoes of all walls and foundations are not abnormal. There is no hollow wall or other cellar."

"Have you checked the chimney?" Lin Ying asked.

"I checked and found that there were indeed signs of scratching the chimney at the entrance, but we used a searchlight to look in. The chimney on the roof was straight up and down, leading to the house, without any trace of reaching the ground."

Lin Ying nodded and said simply, "I understand." Several people in the yard looked at me.

I was indeed under great pressure and had no clue at all, but what Shen Yu said just now made me cheer up again.

Indeed, since the chasing scapegoat was injured, her detective status has plummeted, and her personality has changed a lot. I don’t understand why she said such a rude thing to me yesterday. Maybe she really has her own difficulties, right?

Isn’t it my long-cherished wish to understand her difficulties and help her solve problems?

I closed my eyes and recalled the scenes when Hua Yan came to Wei's house with him. At that time, the fish lock box had disappeared, and we ran to several other rooms to explore, but we found nothing.

I couldn't help but think of Shang Weimin's body again. When Hua Yan said that Shang Weimin was in the belly of the fish-faced boy, I didn't agree with it and thought she was talking nonsense. But at this time, I realized that what she said was true.

Logically speaking, if all Hua Yan’s judgments are correct, then I can find valuable clues by recalling her comments on Wei Zhai.

But what did she say about Wei Zhai?

I suddenly remembered that something interesting happened when I went to the west room of Wei’s family yesterday.

I remember when Hua Yan and I walked to the westmost room, we found that the room had doors, but the windows were all sealed, making it the darkest room.

In addition, there were messy things thrown on the floor of the house, which looked like a utility room. But most importantly, several bats appeared in the dark room.

Now that I think about it carefully, the west room is a very secret room—the doors and windows are sealed, but if that is the case, how did the bats come in?

Bats rely on ultrasonic reflection to determine direction. They emit ultrasonic signals with high audio. When these signals touch other objects, they will be reflected back immediately. After receiving the returned information, the bat will automatically complete the entire process of listening, watching, calculating and bypassing obstacles. This is echo positioning.

Humans created radars based on the principle of bats flying to recognize objects. However, the accuracy of the "instruments" on bats is much higher than that of radars.

When Hua Yan and I entered, the door of the room was closed. Before we opened the door, the bats had already flew in the room. At that time, the whole room was extremely dark and there was no light in the window, so the bats must have not flew in through the hole in the wall.

After seeing the bat, Hua Yan said something that I still remember.

She said that the nest of the celestial rat is on the purlin.

The purlins are the beams, is the passage on the roof?

I immediately turned to the police officer who had just measured the house and asked, "Have you checked the roof just now? Is there a mezzanine on the roof?"

"A few people just swept the roof, but we still calculated the size of the inside and outside, but found no abnormalities. This kind of old house is not as mezzanine like prefabricated board houses. It is built with beams and wood and rafters, and then reeds are laid in the middle, and the roof is then covered with soil and hardened. The mezzanine can be seen from the house."

"I understand, come with me." I walked quickly into the house.

Shen Yu and Lin Ying also went into the main hall with me. When I looked up, I saw a thick main beam extending from east to west on top of several rooms.

I walked to the west room and asked the police to turn on the moving light source to shine on the roof. Sure enough, I saw two or three holes on the main beam, and there were some marks on the wall of the west room. Although it had been a long time and I could not see any trace, some of them could still be vaguely identified in some places. Something must have been leaning against the wall.

"Do you know about construction? How is the weight bearing capacity of the main beam of this house?"

The policeman who was measuring also looked up and smiled and said, "There are such large beams in these rooms, which are obviously a bit of a waste of money."

"Do we have a way to go up and take a look?"

"Of course there is a way." Lin Ying turned around and shouted to another police officer, "Come on the escalator quickly."

Shi Chang agreed and ran out. Although he was a man who usually had a snot, his efficiency was very high at critical moments. In a few minutes, he carried an escalator and ran in.

"I borrowed it from my fellow villager's house, is it enough?" He said, leaning on the escalator against the wall. I held the ladder and looked over and found that the marks on the wall were exactly the same as the spots that were knocked out from the ladder.

Shi Chang held the ladder and was about to go up, but Xiao Yu pushed it away.

"Get out of the way, you are so heavy, what if the ladder can't help it?"

Xiao Yu climbed up the ladder, and Shi Hua had to go downstairs to help her stabilize the ladder. Xiao Yu climbed to the top of the ladder and reached out to touch the huge beam. She slapped the beam a few times.

"It's really strange." Shen Yu pointed to the top and said, "Did you notice it? There seems to be no dust on the beam."

"Tell me a hammer." Xiao Yu shouted to the bottom.

The police officer who was measuring the measurement quickly ran out and took a hammer from the tool box. I took it and climbed two ladders, reached out and handed it to Xiao Yu. Xiao Yu raised the hammer and knocked it hard on the wooden beam twice.

Dongdong.

An empty sound came from the wooden beam, which didn't look solid at first.
Chapter completed!