"The second detail is the scratches on the floor. Sechin said.

"Scratches. Tang Ruoruo repeated it and asked, "What's so strange about this?"

Xie Qin said: "Under normal circumstances, this kind of new door is a flap door, the kind that is pushed open by hand and turned to the other side, and this kind of door will leave a semi-circular scratch on the ground after being pushed open for a long time, ah, if there is also one on the other side, it will be a circle when it is put together." ”

"Hmm...... Truly. Tang Ruoruo nodded.

Xie Qin added: "However, if it is not a flap door, but a secret door that is driven by a mechanism or an electric current, we will not see any trace, unless it is ......."

"Unless what?" Tang Ruoruo asked.

"Unless there happens to be something pressed under the door," Xie Qin said to Tang Ruoruo, "just like in the TV series, something is pressed under the door...... For example, a piece of stick. ”

"A Stick ???"

Tang Ruoruo was immediately stunned.

"How can there be a ??? of a wooden stick under the door?"

"Uh, well, I know, I don't play well in this analogy......" Xie Qin said helplessly, "I really can't think of it when I talk about it suddenly...... Ah, there we have it!"

"What?" Tang Ruoruo asked.

Xie Qin said: "There are ice cream sticks, cigarette butts and other things pressed under the door, so it is not so disobedient, right?"

"At least it's much better than a stick. Tang Ruoruo said.

"Come on, don't tease me. Sechin waved his hand.

Tang Ruoruo smiled, shook his head and said, "Even if there is a cigarette butt pressed under the door, what's so strange about this?"

Xie Qin said: "You don't think it's strange, it's because you have a concept in your heart, that is, 'there is a cigarette butt pressed under the door', of course there is nothing unusual, but the problem is, the wall." ”

"Wall?" Tang Ruoruo asked suspiciously, "What wall?"

Xie Qin said: "Don't forget, I just said that the door was painted with the same color of paint to disguise it as a wall. In other words, in our minds, the wall is the wall, and now there is a cigarette butt pressed under the wall, do you think, abnormal or not?"

Tang Ruoruo seriously thought about it according to Xie Qin's line of thought, nodded his head and said, "Abnormal, very abnormal." ”

"That's it," Xie Qin said, "If this is in a TV series, the plot will have to turn around, because we have discovered the mystery." It is impossible to 'press' a cigarette butt under the wall, which means that this part of the wall is not a wall, but a secret door. ”

"I understand. Tang Ruoruo nodded.

"In this way, we can count the case as solved. Xie Qin spread his hands, "However, this situation is unavoidable, you can only look at your face and can't count on it, and we are filming a TV series again, the possibility of this kind of dramatic thing happening is too low." ”

"Well, that's true. Tang Ruoruo nodded, and then realized something, "Huh?"

"Huh?" Xie Qin was stunned, "What's wrong with Ruoruo?"

Tang Ruoruo glanced at Xie Qin, and said angrily: "Since it's a matter of no score, then why do you say it! And you said so much!"

"Uh-" Xie Qin was speechless, it was true that he was not finished as soon as he said it, he thought about it seriously, and his eyes suspected that he had the problem of being a good teacher.

At this time, Zu Yuji tugged at his sleeve.

Xie Qin glanced at her suspiciously, what is Xiaoyu doing here?

I saw Xiaoyu's eyes look to the left.

Xie Qin was stunned for a moment, followed her line of sight, and saw Tang Shuyan.

Because he was wearing a mask and couldn't see other people's expressions, Xie Qin didn't know what Zu Yuji wanted to express at first, but he quickly reacted that Tang Shuyan didn't seem to have joined everyone's communication from beginning to end.

Why is that? Sechin thought about it and had a guess.

Tang Shuyan has always been eager to save his father, and after entering here, this mood has become more and more eager, just looking at the way he looked just now, he was already a little anxious.

Well...... As soon as this thought came to mind, Xie Qin nodded secretly, Well, yes, Xiaoyu must be trying to tell me that Tang Shuyan's current state is not quite right. It is estimated that the hall master's uncle is also very anxious.

Let's not talk about everyone's state, right, the first priority now is to find the hall master, you can't relax just because you are only one step away from finding the hall master, you still have to hurry up and find someone now!

You can't go on any longer, otherwise there will be a risk of extraneous branches!

With that in mind, Sechin took another step and continued to walk towards the other side of the hallway.

"The third detail to pay attention to is the sound. ”

He said to the crowd as he walked, without looking back.

"Voice?" Tang Ruoruo asked.

"That's right, voice. Sechin nodded, raising his hand and knocking twice on the wall.

Knock knock.

Very dull sound.

"Is that the voice?" asked Tang Ruoruo.

Xie Qin nodded again and said, "No matter how similar the disguise is, the sound of the wall and the door panel is different. Listen," he tapped again, "it's the sound of the wall, and it's dull because it's solid." On the other hand, if it were a door panel, because it was hollow inside, the sound would be very different from the sound of the wall, like this—" he tapped his hand on the wall again, "it's not at all...... Huh?"

Xie Qin was stunned for a moment and stopped.

Everyone was also stunned and stopped.

Because the sound of Xie Qin knocking on the wall this time was very different from the sound just now.

It's not a dull knock, but a slightly crisp knock, knock!

Xie Qin raised an eyebrow.

The sound is too different from the one just now! The walls can't make such a crisp sound at all, but rather......

！！！

Xie Qin was shaken.

No... No way?

He secretly said in his heart, very unbelievable.

It can't be such a coincidence, right?

He turned his head and looked at the wall.

What was Sechin thinking? Why was he so surprised?

The reason is simple, his words just now have miraculously come true. He really came across something very different from the sound of a normal wall, just as he spoke.

So Sechin was so surprised, it should be said, he could hardly believe it was true. It will be a prophecy.

It's a bit of a coincidence, it's even more coincidental than a cigarette butt pressed under the secret door!

Xie Qin turned his head to look, and saw that everyone was staring at the wall, and through the gas masks, their eyes were shocked.

As he was talking about a different voice, he came across such a play, this ...... This is even more dramatic than pressing a cigarette butt under the door! There is no such thing in a TV series! Because this kind of plot is so unbelievable!

Xie Qin turned his head, he also thought that this was too unbelievable, and in order to make sure that what had just happened was not a hallucination, he raised his hand and knocked on the wall again.

Knock knock.

It was still a slightly crisp sound, completely different from the two dull thump sounds before.

How can it be like this?

It's not so much unbelievable as it is ...... Indescribable.

Because it was so sudden, Xie Qin didn't even start to look for it carefully, when he came across such a scene.

He looked up and down the wall in front of him.

Say a thousand, say 10,000, think so complicated, and the result is not a lot of effort?

It's too ...... This is so ironic, Xie Qinxin said, this is simply reality satirizing me, saying that I think too much!

In vain, I just thought that the idea of knocking on the wall was too troublesome, and it would take a long time to find someone, and I was going to start with the paint, carefully staring at the change in the color of the paint, or the scratches on the ground, to find the location of the darkroom, but I knocked on the wall casually, and I found the darkroom?

That's not all...... It's just ......!

Xie Qin shook his head, that sentence was really right, what's the matter? Oh, reality is always more exciting than drama, it's true.

This kind of peak loop is too abrupt and too old-fashioned, so no one uses it in TV dramas!

It turned out to be a real encounter in reality.

This is really amazing, Xie Qin shook his head secretly, and sighed from the bottom of his heart, it was amazing.

He continued to look the wall up and down.

Not to mention, the color of the wall paint is really no different from the surrounding color.

But the sound does not lie, this voice is indeed hollow, and the walls are by no means by chance hollow.

...... I'll make sure again.

Xie Qin raised his hand and knocked up and down on the wall, and he heard a knock knock sound, he knocked on different positions, but the sound was like this, which showed that the area of the hollow was very large.

This is definitely not a coincidence, after knocking, Xie Qin can be sure that there is a dark room inside.

As Sechchin just said, there are two possibilities. Or, it's the new house that is newly painted, but this can't explain why there is a dark room, could it be that there was a dark room when this house was built? Xie Qin shook his head secretly, no, it shouldn't be like this, unless this house was built by the Red Fire Hall, but this is too laborious, unlikely.

Another possibility is that in order to hide the existence of this dark room, Chihuo Hall has freshly painted the entire room, which Xie Qin thinks is more likely. And it's a very safe approach, generally as long as you have a little brain, you will do this, because the color contrast between the old and new paints is so obvious that you can see it at a glance.

And this possibility also overturned Sechin's original assumption. Because there is no difference in color, at least not with Sechin's eyes. If you really follow this strategy to find the dark room, it will definitely not work.

Xie Qin just talked about three small details to identify the secret door, one is the paint, which is made by the Red Fire Hall, and the other is the sound, it is through the sound that the blind cat meets the dead mouse and finds the secret door.

So...... What about the third detail?

The third detail is the scratches, which determine whether the secret door is a manual flap door or is actuated by a bracket or current.