I felt sick to my stomach and almost threw up everything I had eaten for breakfast.

She patted me and said soothingly: "Don't forget what the old man of the Zhu family said, that child has a problem with his mind, just like a kitten and a puppy, he doesn't understand human feelings." The old man of the Zhu family may not have enough food left, he will often go to the garbage dump to pick up food to eat, maybe he felt that he had gained a lot that day, because he picked up a big piece of meat......"

"Don't say it......" I waved my hand at her.

"So, we have to find a way to find the entrance and exit of the secret room of the Kui Mansion and rescue this child. Don't blame me for always putting the blame on you, I don't have the ability to discover the 'logical singularity' anymore, I'm still adapting, and I don't have enough confidence in many things. Also, I actually felt guilty about what I said yesterday, and I don't know why I suddenly talked about my flaws - I hope that after this case is closed, we can have a good conversation. ”

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

At this time, a police officer came out of the house of the Kui Mansion, he shook his head at Lin Ying and said: "This house seems to be really fine, the size of the inner and outer outlines is relatively natural, and the detection echo of all the walls and foundations is not abnormal, and there is no hollow wall or other cellars." ”

"Has the chimney been checked?" Lin Ying asked.

"After checking, there were indeed traces of rubbing at the mouth of the chimney, but we used a searchlight to look inside, and the chimneys on the roof were all straight up and down, leading to the house, and there was no trace of going underground."

Lin Ying nodded and simply said "Got it", and several people in the courtyard turned their eyes to me.

I was indeed under a lot of pressure and had no clue at all, but what Shen Yu said just now cheered me up again.

Indeed, since the pursuit of the backstabber man was injured, her detective status has plummeted, and her personality has also changed a lot. I don't understand why she said such blunt things to me yesterday, maybe she really has her own troubles, right?

And isn't it my long-cherished wish to understand her hardships and help her solve her problems?

I closed my eyes and thought back to the scene when I came to the Kui Mansion with Hua Huan. At that time, the fish lock box was missing, and we went to several other rooms to fumble around, but found nothing.

I can't help but think of Shang Weimin's corpse again, when Hua Hu said that Shang Weimin was in the belly of the fish-faced boy, I didn't think so, thinking she was talking nonsense. But at this time, I realized that what she said was true.

Logically speaking, if all of Hua Qi's judgments are correct, then I only need to recall her comments on Kui Zhai, and I can find valuable clues.

But what did she say about Kui Zhai?

I suddenly remembered that when I went to the Kui family Westinghouse yesterday, an interesting thing happened.

I remember that when Hua Fu and I went to the westernmost room, we found that this room had a door, but the windows were sealed, and it was the darkest room.

On top of that, there was a mess on the floor of the house, which looked like a utility room. But most importantly, there were also a few bats in the dark house.

Now that I think about it, Westinghouse is a living secret room - the doors and windows are sealed, but if so, how did the bats get in?

The bat relies on ultrasonic reflection to determine the direction, it emits a high-audio ultrasonic signal, these signals will be reflected back immediately when they hit other objects, and after receiving the returned information, the bat automatically completes the whole process of listening, seeing, calculating and avoiding obstacles, which is echolocation.

Humans have created radar based on the principle of bats flying and recognizing objects. But the accuracy of the "instrument" on the bat is much higher than that of the radar.

When Hua and I entered, the door of the room was closed, and the bats were already flying in the room before we could push the door open. The room was so dark that there was no light in the windows, so the bats certainly didn't fly in through the holes in the walls.

After Hua Hu saw the bat, he said something that I remember vividly.

She said that the nest of the heavenly rat was on the purlin.

The purlin is the beam, is the passage on the roof?

I immediately turned to the officer who was surveying the house and asked, "Did you check the roof just now?" Is there a mezzanine on the roof? ”

"A few people just swept the roof, and we calculated the internal and external dimensions, and found nothing unusual. This kind of old house is not like a prefabricated house that can be used as a mezzanine, it is built with beams and rafters, and then the middle is covered with reed bags, and the roof is covered with soil and hardened, and the mezzanine can be seen from the house. ”

"Understood, you come with me." I walked briskly towards the house.

Shen Yu and Lin Ying also followed me into the hall, and when I looked up, I saw a thick main beam running from east to west across the top of several rooms.

I walked to the Westinghouse and asked the police to turn on the mobile light source to shine on the roof, and sure enough, I saw two or three holes in the main beam, and there were some marks on the walls of the Westinghouse.

"Do you know anything about architecture? How about the main beam bearing capacity of this house? ”

The police officer who measured also looked up, and he smiled and said, "These rooms have such big beams, which is obviously a bit overkill." ”

"Is there a way for us to go up and have a look?"

"Of course there is a way." Lin Ying turned back and shouted to another police officer, "Hurry up and get the escalator." ”

Shi Chong said yes and ran out. Don't look at him, he usually has a snot essence, but he is very efficient at critical moments, and in a few minutes, he ran in with an iron escalator.

"The villager borrowed it, is it enough?" As he spoke, he leaned the escalator against the wall, and I leaned over to look at it, and found that the marks on the wall were exactly the same as the spots from the ladder frame.

Shi Chong was about to go up with the ladder, but was pushed away by Xiao Yu.

"Get out of the way, you're so heavy, what if the ladder can't hold back?"

Xiao Yu climbed up the ladder, and Shi Chong had to be below to help her stabilize the ladder. Xiao Yu climbed to the top of the ladder and reached out to touch the huge beam, and she slapped it on the beam a few times.

"It's weird." Shen Yu pointed to it and said, "Have you noticed?" There doesn't seem to be any dust on the beams. ”

"Hand me a hammer." Xiao Yu shouted below.

The police officer in charge of the measurement hurriedly ran out and came in with a hammer from the toolbox, and I took it and climbed two ladders, and reached out and handed it to Xiaoyu. Xiao Yu raised the hammer and knocked it twice on the wooden beam.

Knock knock.

There was a hollow sound coming from the wooden beams, and it didn't look like a solid one when you heard it.