Standing by the entrance, I didn't rush down and asked Bishi if she knew who built the Baiyu City.

Those who first or initially successfully arrived in Baiyu City may have found the "information" of the builder.

He Su can develop energy on the island, and she may have information that others do not have.

"It is said...the people under the sea, their ancestors established the under sea civilization, but later they were destroyed by war. This branch escaped and built this island."

"Build this island? Didn't you build a city on the island?"

"That's what He Su said, I didn't ask in detail."

"oh……"

"What did you think of?"

“Ah~”

"Do you have a language barrier? Oh, did you think of something?"

"Yes, but I won't tell you." I started the mode of confronting Bi Shi Child again, shaking my head to anger her.

"Who doesn't know about virtue, haha~ bah!"

"Go down." I jumped off the entrance first, and there was no ladder below, so I jumped down directly, with a height of about three meters.

Bishi followed me down. The ground was very hard, not the land or the stone, but like some kind of...

"Oh, this seems to be a shell!" Bi Shi jumped down and didn't get up, squatted on the ground and stroked the ground twice.

The ground is white with slightly dark textures, but the edges are not visible from front, back, left and right. If it is a shell, it would be too big.

"There are stairs." Bishi walked forward a while, and there was a staircase with strings in front of him.

The big shell is like a platform, the steps hover downward, and I found the mark left by Chen Qinghan at the corner on the left side of the stairs.

We didn't discuss it in advance, but I saw him leaving such a mark for his colleagues before.

Each symbol represents a meaning, and this triangle represents security.

He wanted to tell me that this ladder was safe. I raised my eyebrows, crossed the blue stone, stepped on the ladder generously, and walked down quickly.

"Hey, aren't you afraid of having mechanisms?" Bi Shi followed behind, his speed was not slow at all, but he still wanted to squeeze me out.

"Someone has been passing by for us, what are you afraid of?" I didn't tell her the mark, that was the internal contact information of our unit, and it was not convenient for others to know.

Well...our unit...

Without having to walk carefully, we only took five minutes to go down to the bottom of the stairs.

Although the steps are hovering, the distance you get down is already deep enough when you walk for five minutes.

The bottom of the spiral step should be perpendicular to the shell platform above, and the ground is also made of shell material.

If the real secret room is set up so deep underground, perhaps the treasure that Lao Shi and the others mentioned really exists.

"Oh? Your eyes shine. What good things have you seen?" Bi Shi made a disharmonious voice next to him.

"Hmph." I ignored her and looked around. The stairwell should be cylindrical from top to bottom. In the circular space below, there is only one door besides the stairs.

The door faces the stairs, and there is no other entrance or exit. At the lower left corner of the left door panel, I found the mark left by Chen Qinghan again.

That was an arrow pointing to the right, which meant that they were heading to the right.

Bi Shi walked over and pushed open the double door panel. There was a corridor outside, and there was no end to the left and right.

"This place is quite big." Bi Shi walked a few steps to the left, then turned back and walked right, raising his neck and looking around for a while.

"Well... to the right, I could feel their breath." I closed my eyes and took a breath.

"What have you unlocked the police dog skills?" Bi Shi looked at me suspiciously.

"Do you understand if you have a heart-to-heart understanding? Don't understand, old-fashioned." I don't plan to explain the marks. I don't care whether she can understand it or not, so I walked straight to the right.

Bishi could only follow me. There were only two of us. If we acted separately, one of them fell into the ditch and there was no one who could catch up.

This place is not clean normally. Baiyu City has been abandoned for a long time. The underground secret room may not have been opened for a long time. Since it is a place with clean air, there must be ventilation vents. How can the ground and walls be spotless?

"Oh, ah?" Bi Shi hit me with his shoulder, "This place has been covered in dust for many years and is spotless. Do you think there will be that thing?"

“Which thing?”

"That!"

"I can't remember if you don't say the name."

"Yes, I forgot, the dust-proof bead."

"Oh!! What is that?"

"Didn't it meant to die?"

"No, I want to save my memory now so as not to become an idiot."

"Fu, as the name suggests, is the energy that can allow a place or something to go through thousands of years of wind and frost, and still remain spotless and unchanged in appearance."

"You poked so many words, doesn't it mean that there is an automatic vacuum cleaner?"

"It's so vulgar, so vulgar!"

We were not speculating, but we ended in silence with each other's conversation.

However, the dust-proof beads mentioned by Bi Shi should be very valuable!

After walking silently for twenty minutes, Bi Shi spoke again: "Are we standing still? Why didn't we see our heads after walking for a long time?"

I stopped, pulled out the dagger and drew an X-shaped mark on the wall next to me.

Then he squatted down and waited quietly to see. Bishi asked me what I was doing. I asked to confirm whether this corridor was a giant treadmill.

We are clearly walking forward, and there is no possibility of standing still. If the statement that remains still is valid, there is only one possibility, we are on the treadmill.

Because I took ten thousand steps on the treadmill and was still at that position.

"I have a clear mind." Bi Shi murmured and leaned against the opposite wall to rest.

I just guessed casually, and after waiting for a while, the mark on the wall was not removed, but it disappeared under my nose.

The dent cut with the dagger returned to smooth. I quickly turned around and wanted to call Bi Shi to see it, but when I turned around, I found that she was missing.

"Lao Bi?" I shouted twice to the left and right.

Just now, and within half an hour, the "half" of the team members disappeared.

I touched the wall she was leaning against just now, and I started to use it cold and smoothly. I pushed it hard, but I didn't find the flip mechanism.

I went back to the wall where the mark was marked, damn it, the mark suddenly came back?!

"Is it good? Is it so good? I can see that the flowers are coming?" Bi Shi's voice suddenly appeared behind me.

I got up and pulled her forward, and the speed was too fast, so she couldn't open her mouth and asked anything.

It was not until a door appeared in front of me that I took her to the door before stopping.

"Are you crazy?" Bi Shi broke free from my hand and looked at me for no reason.

"There was a phenomenon of time and space dislocation just now." I replied while looking at the door in front of me.

"No wonder I haven't finished it for so long. Hello, do you think Professor Chen and the others will--"

"No! They've had similar situations."
Chapter completed!