As soon as the sky was bright, Red Night and Song Enru accompanied me up the mountain, and they sent them to the entrance of my cave, Red Night emphasized the precautions in it again, Song Enru repeatedly told me to be careful, and I could see that she was particularly worried about my accident.

Maybe her heart, which has been hit again and again, can't afford to lose it again, I took Red Night's words to heart, and then shook Song Eunru's hand, and assured her that I would do what I could, and if it didn't go well, I would come out immediately.

Red Night went down to the cave and pressed down on a rock wall next to the stone plate, and if she didn't, I really didn't notice a hidden mechanism in that place.

The mechanism retracted into the rock wall, and I listened closely, and there was a very small sound coming from the rock wall, like the sound of machinery running.

When all the small sounds stopped, Red Night opened the stone plate for me, and each set of patterns on it was actually a password, which needed to be pressed in a specific order, and Red Night said that this was the correct way to open the tunnel.

I stepped into the open tunnel entrance, waved at the red night, and turned to walk inside, the layout was slightly different from the last time I entered.

The original fork in the road is gone, and there is only a straight tunnel in front of you, but according to Red Night's description, there will be a dividing point at each section.

These dividing points, which are also time nodes, are similar to time scales, except that she doesn't know the duration of each scale yet, which needs me to verify.

Walking to the first point in time, I looked on the wall for a while, and in fact, the thing that represented the scale was the relief on the wall.

The relief is only the size of a mobile phone, and the shape is so simple that it is easy to overlook.

Red Night said that these are the numbers used by the builders, and like the Arabic numerals used by humans, they are simple in construction and easy to remember.

Such a digital relief is mixed on the uneven rock wall, if you don't know the inside story in advance, I'm afraid you have to touch it inch by inch to find it.

I found the first node, touched the surface of the relief, didn't notice anything unusual, and continued to walk inside.

In order to facilitate contact, Song Enru and I brought walkie-talkies, I thought that since Fang Xu and Miao Xiaoran's distress signals could be transmitted, there should be no electromagnetic interference in it.

But since I came in, I found that the walkie-talkie was out of order, of course, there was nothing to make a fuss about, when Fang Xu and Miao Xiaoran were trapped, the space here was in a state of chaos, and it was likely that the interference signal did not work.

After Red Night repaired the tunnel, the original source of interference was restarted, and the inside and outside could no longer be connected.

I touched it one by one, and when I touched the fourth number relief, my body finally felt a little strange.

My head was a little dizzy, and I felt the same shaking sensation as the aftershock waves, but it felt very slight and nothing more unusual.

I looked down at my watch, and since I came in, every ten minutes, I would look at my watch, and if time started to go backwards, the time displayed on my watch should be reversed, and it might even fail.

When I felt a shaking sensation in my body, I immediately looked at my watch, but the hands did not change in the slightest, and the time was a quarter past seven in the morning.

Because I promised Song Eunru that I would stop whenever I noticed something unusual, so I didn't continue to walk forward, stopped under the fourth number relief, and prepared to go back.

According to our previous agreement, at this time I should contact Red Night through the walkie-talkie, and she will turn off the tunnel switch outside, and then I will go out again.

But now that the walkie-talkie is out of order, I can only try my mental power, and if my mental power can't penetrate out, I have to go back directly.

I let out my spiritual power and stretched it out to the surface, but unfortunately the spiritual power that stretched out out seemed to be swallowed up by the void space, and no matter how much I released, it couldn't reach the surface.

"Hey... It seems that I can only go hard. I muttered, turned and walked back.

However, as soon as I took two steps, I frowned, for I found that the tunnel behind me had disappeared, and all the traces of man-made construction had disappeared.

The digital reliefs, the flat ground, and the regular tunnels all turned into natural caves, and I was about to retract my feet, but it was too late, and the moment I stepped into the natural caves, the tunnel behind me disappeared.

The path I hadn't finished yet, too, had become a natural cavern, and apparently, I had managed to enter another plane, and it must have been in the past, earlier than what Red Night had seen, and this should have been when the cave had not been built.

A lot of times, I can't explain why this happens, I just know that it's the way it turned out, after all, I'm not a scientist and I've never learned anything about it.

Using my common sense, the time tunnel shouldn't send me to a time when it doesn't exist, because at this time it doesn't exist, how can it play the role of a time traveler?

Unless......

A bold idea popped into my head, unless this natural cave was originally a time tunnel, and the plane travelers had only slightly modified and renovated it.

I'm curious about what age it is out there, and the plane travelers haven't discovered this tunnel yet, could it be ancient, or proto-ancient?

But I restrained this curiosity, and dispelled the idea of teleporting out to take a look, and I did as Red Night had instructed, no matter how it changed inside, just keep walking back.

Because I may have gone too far, let's say a point in time is a hundred years, then I have already gone four hundred years ago, and all I need to do is go back the same route.

"Who?" A voice suddenly sounded in front of me.

The cave was pitch black, and I couldn't see my fingers, of course, my night vision allowed me to see my surroundings clearly, but the people in front of me, I really didn't notice.

Coldly, in an environment where I was pretty sure there was no one, I was startled by the sudden sound of human voices.

"Who?" I subconsciously asked, there is still a difference between fear and fear, what I am afraid of is not something inexplicable in the dark, but I was shocked by the fact that there are people here.

"Which plane?" The other party asked rhetorically.

When I heard the word 'plane', I immediately realized that he was a plane traverser, and my mind instantly burst out of the plane where Lu Zhi was.

So I casually said the organization where Lu Zhi worked, and the person suddenly lost his voice after hearing it, and I said in my heart that it was terrible, the plane traverser who built this place is very likely to be an illegal traverser, and the organization where Lu Zhi works is dedicated to arresting these illegal traversers.

In this way, is not the relationship between me and the other party hostile?

"What's your name?" The one asked after a few seconds of silence.

I kept my eyes firmly on the dark place in front of me, and released my spiritual power to probe the surroundings to make sure that there was only one person on the other side, and the energy in my body was not very strong, so I put my mind at ease.

"Ray." I made up a title that looked like a name and a code name.

"Ray? Haven't heard of it. The man seemed to search his memory, but his tone didn't sound very sure.

"I'm investigating the illegal traversers." Now that the lie has been told, I decided to make it up to the end.

"You're alone?"

"My partner is outside."

"We crossed legally, and we have approval."

"Oh, legal ......"

I remember Lu Zhi said that in order to protect the low-level plane, a large number of traversers are forbidden to enter and exit the high-level plane, if a few people have to pass through, just use the space-time shuttle like Lu Zhi, there is no need to mobilize the crowd to build a time tunnel.

Besides, the tunnel was abandoned later, so I didn't believe what the man said, so there was a bit of skepticism in my tone.

Actually, I thought about asking him for approval, but first, I couldn't read the text on their plane, and second, if he asked me for documents, I wouldn't be able to justify myself.

"Do I need to see the approval?" The man asked.

"Forget it, I'm just asking." Whether his words are true or not, I don't have to stop them, and if they give up here, then I won't cross over.

I just want to prevent the disaster from happening, and I don't want to do anything superfluous, and the consequences of the butterfly effect are something that no one can predict, so I think it's better to have more than less.

"May I ask you to leave the survey site, then?"

"I'll leave right away."

As I passed him, he raised his wrist and said something flashing at his wrist, and my body paused uncontrollably.

But it was only a slight pause, the footsteps did not stop, and the moment I passed him, I looked at this man in the dark.

As the distance narrowed, I finally saw his face, and although I was very surprised in my heart, I tried my best to keep my composure on my face.

This person's appearance is exactly the same as Lu Zhi's, and just now, the words he said to his wrist were 'Lu Zhi, you come in immediately.' ’。

A person who looks exactly like Lu Zhi also called out Lu Zhi's name, could it be that they are twin brothers?

"What's your name?" I turned back to the man.

"Lu Rui". The man replied crisply, clearly not caring that I knew his name.

Sure enough, it was a brother, I muttered to myself, turned my head and continued on the road.

Lu Zhi actually came to this tunnel, and now the tunnel has not yet started to be built, and this person named Lu Rui said that this is the survey site, so they should be the surveyors in the early stage.

After the survey is completed, someone will come to preside over the construction work, and according to the time point of the Red Night Travel, it must be the Stone Age outside.

Four points in time have traveled to the primitive era, so we wear to the era of antique Sangrou, and it should be enough to only reach the first time node.

As for why Lu Zhi is here, and the purpose of their time tunnel, I have no intention of delving into it.

But as I walked, the problem came, there were more than two forks in the cave, which was different from when I first came in, and it was also very different from the tunnel after the Red Night was repaired.

I suddenly thought of Lu Rui's words, he just called Lu Zhi in, then I only need to lock Lu Zhi's brainwaves, and I can find a way out.

Thinking of this, I hurriedly released the spiritual net, fortunately, the spiritual power could work normally inside the cave, and soon I caught a new brain wave.