"The structure of the place doesn't feel very reasonable. ”

Xu Wen stood in front of the first pavilion and looked up.

Yesterday, Wu Keming also lived in a side room here.

To be precise, this structure, which doesn't feel very reasonable, is above the side of Wu Keming's residence, and the distance is quite close.

"What's wrong?" Qiao Zhi followed closely next to Xu Wen, the first to ask.

In the past, Qiao Zhi didn't care about anything other than making money, but now it seems that something has changed......

"Here. Xu Wen directly handed over the wooden board in his hand, and drew the figure he had just calculated with charcoal.

Qiao Zhi took it, stared at it for a long time, and suddenly realized: "There is an extra space here!"

"Yes. Qiao Zhi has always been very sensitive to numbers and space, and Xu Wen's drawings are clear enough, so it is not surprising that he can see it quickly.

"Let's go, go up and have a look. Xu Wen took the lead and walked over there, Qiao Zhi was the first to follow, and the others quickly followed, but after a while, they were blocked outside and couldn't get in.

In the previous task arrangement, this building was temporarily named Shibiju No. 1 Building, it has a total of two floors, the first floor is relatively large, and there are a total of five rooms on the front side, Wu Keming lives in the one to the west, which is considered a wing room.

Due to the terrain restrictions, the second floor is relatively small, with only three rooms, and Wu Keming took them up to visit before.

The three stone chambers on the second floor were the same as before, empty, and there was nothing.

They deduced from the data inside and outside that there should be a space on the far right side of the second floor, but when they came up here, they only saw a small room, opposite the stone wall, the stone wall was a little mottled due to weathering, but it looked complete, and there was no trace of the passage at all.

Xu Wen and Qiao Zhi glanced at each other, and Qiao Zhi stepped forward and began to grope carefully on the stone wall.

"There's really no door. After a while, Qiao Zhi took a step back and shook his head.

At this time, Xu Wen also walked over, one ear pressed against the stone wall, and the other hand tapped on the wall.

Stone is not wood, it is not so easy to hear, he listened carefully, and discerned it carefully.

"I'll try. Sun Si also squeezed in, posted it to the wall, knocked on the wall and listened carefully.

His tapping gesture was different from Xu Wen's, and his ears moved a few times when he listened, which was very interesting.

"The wall is a bit thick, but the back is definitely empty!" After a moment, he looked up with great certainty.

There was indeed no door on the wall, but the back was empty, indicating that the space they had deduced did exist.

What's going on? How do you get in without a door?

"Brother Fourteen, come here and have a look!" After a while, Fang Jueming's voice sounded, a little dull, coming from downstairs.

The crowd got out of the way, everyone was curious, but they still let Xu Wen come ahead.

The voice came from Wu Keming's study, but when Xu Wen walked in, he didn't see Fang Jueming's person.

Then, Fang Jueming and Xu Xihuai poked their heads out from behind the opposite wall together, beckoned to him, and said, "Fourteenth brother, look, there is a road here!"

Hey, where did they come from?

Xu Wen found out that the right wing room where Wu Keming lived was not a single room, but two rooms inside and outside, but using people's visual blind spots to hide the inside very cleverly, and it could not be found without going to a specific position.

And the inner room of this room, not a room to be exact, but a space, diagonally upward, forms a whole with the hidden space above, that is, a complete space, reaching backwards into the mountain, straight down.

Obviously, this space was also created naturally, and then the builders reinstated and strengthened the original to give it shape.

Crucially, it went straight inward to the belly of the mountain, and it looked like the secret passage they were looking for!

The secret passage is located in the belly of the mountain, and the foot looks smooth, but it is very dark.

This darkness is extremely pure, secret and deep, and with the faint light cast from outside, it looks like there are countless monsters hiding in the depths, almost making people a little dizzy.

Xu Wen glanced inside, and was about to turn around to say hello, when he saw Xu San walking in from the door, holding two torches in his hands, one in his hand, and the other handed to Xu Wen.

"I'd better go down. Fang Jueming was next to him, wanting to take the torch, Xu Wen shook his head, took it first, and said by name: "The fourth brother will go with me." ”

The secret passage is too dark, and Sun Si is extremely sensitive to sound, which can just make up for this defect.

Sun Si hurriedly walked over and took the torch from Xu San's hand.

The others had no objections, and Xu Wen's judgment was their decision.

"If there's a strange voice, just tell me. Xu Wen said to Sun Si, and Sun Si immediately nodded.

The light of the torches temporarily dispelled the darkness before their eyes and illuminated the path beneath their feet. The light continued to stretch forward, and the clouds of darkness fled one after another in panic.

This is a completely unfamiliar environment, and although Xu Wen is not nervous, he is still very vigilant. As he walked, he observed his surroundings.

In such an environment, the torches are used for lighting and to help confirm that the space is completely enclosed and that oxygen is present.

They kept moving forward, and could feel the road under their feet slowly descending, but the torches kept crackling, and there was no sign of dimming or extinguishing, indicating that the mountain path was very oxygen-rich and well ventilated.

From the point of view of the stone walls on both sides and the road underfoot, this mountain road is mainly naturally generated, and it is a naturally opened crack in the mountain, which happens to be connected to the mountain crack where the stone wall dwelling is located.

So the builders of the stone wall dwelling used it to make a secret passage to the bottom of the mountain.

"Well, what's the sound?" Sun Si suddenly tilted his head, then bent down and picked up something from the ground.

His ears were so powerful that Xu Wen didn't even notice it, until he bent down and realized that there seemed to be an extremely slight sound of gravel rolling just now.

"What is it?" Xu Wen brought the torch over.

It was a piece of gravel, only the size of a finger, and it should have been kicked by Sun Si just now.

Xu Wen took it and touched it, and then let out a light "huh" and said, "This is...... Bluestone!"

The stone wall dwelling is mainly made of granite, supplemented by bluestone and bricks.

Tianyun Mountain originally produced granite, and most of the stone walls were used on the spot, but how the bluestone and fired bricks and tiles were transported, Xu Wen never figured it out.

Now it looks like it was shipped from here?

They walked down a little further, and Sun Si found a tile left in the corner—a very complete tile.

At this time, Xu Wen finally determined, this is the road, which was used to transport materials when Shibiju was built, and now it is used to transport supplies when Wu Keming stays!

In a flash of light, he thought of something else.

This road can deliver things from the bottom up, can't it be transported from the top down?