I couldn't get an answer just by thinking, so Gu Xi and I rummaged for a while, and walked out of the house without finding anything.

When I walked away on the crystal orchid, I inexplicably looked back, I don't know if it was the reason for the change of mood, I just looked at the house before I went in, I only felt confused and surprised, but at this time I felt heavy. There was a sense of despair rising in my heart, and I knew that it was not mine, but the person who had lived in this house, or perhaps my pen pal.

After walking for about half an hour, we didn't see any other houses, and this place was a very barren place if it was on the ground. When the wall reappeared, I couldn't help but be stunned, obviously we had been moving forward, never turning or detouring on the way, but why did we return to the starting point?

Gu Xi whispered something in his ear, and I went to look at him, "What did you say?" ”

He also had a suspicious look on his face and repeated to me, "Ghost hits the wall." ”

I know the meaning of "ghosts hitting the wall", that is, someone travels to a cemetery at night, and suddenly he can't tell the direction, and he always walks in circles, but then he can get out of the cemetery after dawn. So some people said that he was blinded by ghosts, and if he messed up his mind, he would not be able to get out of the cemetery, so it was also called ghosts hitting the wall.

But in fact, this is just an abstract statement of the people, and there is a theoretical basis for it. That is to say, there will be a difference in the length and strength of the steps taken by the two legs, so there will always be a shorter distance on one leg than the other, so that when you walk down, you will inevitably go out of the circle when the horizon cannot discern the environment.

So why do we go out of a straight line under normal circumstances, it is because our eyes are constantly correcting the direction with the brain and making orientation. The environment is dimly lit by the black light ore, and even if we have flashlights, it's only in limited scope. At this time, our human eyes will rely on the surrounding markers to communicate with the brain, but they will also fall into a situation where even we cannot judge accurately.

If there is a trapped dragon formation in this space, then it is believed that the owner of this place will also create a marker that can disturb people's vision to make the intruder lose it.

He tried to push the stone door open, but found it moving.

"There's no need to push, it's a self-defense mechanism, formed by air return, and now the air pressure outside is stronger than the inside, and manpower can't push it away."

I was slightly stunned, but..."Xie Fu, how did they get out after they came in?" ”

"It was out the door on the other side. The whole space is like a layer of water placed horizontally, the first layer has the highest air pressure, suppressing this door to close, and the other end is on the bottom layer, which will be pushed open by the middle layer of air pressure. ”

It's easy to understand, but I always feel that something is wrong.

I only heard Gu Xi say: "Let's go back and walk again, this time if we don't turn on the lights, you will follow me." ”

I nodded, and as soon as the flashlight dimmed, my eyes were completely dark, especially the eyes from light to dark could not see at all, and even the people around me could not see. But soon his hand was grasped by his warm palm, and the slightest insecurity when he led him disappeared, and he felt that as long as he followed him, he was not afraid of anything.

He didn't deliberately stop listening to the sound of his own walking, the sound of his boots hitting the ground was the only note in the space. Listening calmly and forcefully, and without the slightest hesitation pause, I couldn't help but ask, "Can you see it?" ”

After a moment of silence, he replied to me: "Didn't I tell you?" I can't see. ”

"But why are you as calm as you are when you open your eyes?"

As soon as I asked, I heard a chuckle from him, and his soothing voice reached my eardrums: "Xiaoyuan, are you praising me?" If you can learn what I can do, you will be able to be at ease at all times. ”

Is it because it is strong, so calm?

I thought so, and it was too hard for me for him to ask me to learn what he was capable of. First of all, in terms of scheming, I don't even have the skin to him, let alone anything else.

I was afraid that he would be distracted by talking, so I didn't dare to ask more questions later, so I just followed him all the way with confidence.

However, when Gu Xi suddenly stopped, I frowned.

Even if you can't see, you can feel the lack of air circulation in front of you, which is different from the faint breeze you feel when you are walking forward. Sure enough, with a snap, Gu Xi lit up the lamp, and the city wall was close in front of him.

We walked back to where we came.

The same city walls and stone gates are also impossible to open.

I saw that Gu Xi's face was a little heavy, and I just wanted to persuade him, but my eyes darkened, "Come again!" ”

Silent, he could already hear the annoyance in his words, maybe he didn't feel like he should be trapped in this space. Actually, I wanted to say that even if I went back to the same place, then I would go back, and at most go through that dilemma again. It's just that the three people on the side of the stone plate are a trouble, and they don't know how to ......

My thoughts suddenly stopped, and I kept ignoring an important matter, from the city wall to the stone plate is only a hundred meters, it can be said that it is a very clear marker. But we didn't pass the stone pan twice, the first time we turned on the flashlight, and the second time we were pulled by Gu Xi after the lights went out. Walking with the lights on, we may be misled by some signs, so turn off the lights and go......

I seemed to think about why Gu Xi had to put out the lights and walk, and why he was able to avoid danger in the Trapped Dragon Formation.

He said it was by feeling, and it was just a casual thing he said, and the real reason was ...... He will calculate the pace!

Just now I analyzed the principle of "ghosts hitting the wall" because the spacing of our two legs cannot reach the exact same, but Gu Xi can.

I remember that time he took me to the auction and he called me up to the stage so that I could measure the bronze horse. But I only have a general idea of the ruler, and I can't achieve accuracy, so he secretly compares a scale to me, and then uses that scale to accurately reduce the specific size of the bronze horse to the decimal place. The people in the audience were amazed at my magic, but I realized that he was the real magic! I believe that no one in this world can compare at will, and can compare with a scale that is more accurate than a measuring tool.

This incident is enough to prove that he has a ruler comparable to a measuring instrument in his heart, and it seems that he takes steps at random, but in fact, every step is exactly the same distance. There is another reason that can make me make this judgment, and that is Tong Ying.

On top of Gu Mountain, I saw Tong Ying walk like this with my own eyes, every step she took up the mountain was very light, and the spacing between steps was almost the same. At that time, I only thought that a person who was calculating her own pace must have been bottomless. So the fat woman Mei Jiugu's sweat on her head is not fake, she really feels the pressure from behind her. As everyone knows, Tong Ying's calculation pace is because of the person who is walking in front of me, who is close to Zhu is red and close to ink is black, she has learned Gu Xi's calculation steps and light steps, but she has not yet reached his realm.

As for the trapped dragon array, it may not be a straight line, but he is a person who can drain all his breath, and he must be particularly sensitive to the return of air. Therefore, even if there are many dangers waiting for him in the trapped dragon array, he will sense it in advance. That's why he answered by "feeling", and in that sense, he wasn't lying, he was telling the truth.

And the truth is often unbelievable, who can retract his steps freely like him, if he wants the same step distance, he will be silent, if he wants to be silent, if he wants to collect his breath, if he wants to sense the spatial airflow, he can sense it? And he won't show these things in normal times, because he is sharp enough, and if people notice him again, I'm afraid that anyone who is with him will feel afraid.

But at the moment, I didn't feel scared. I just can't figure out why we have returned to the city wall since Gu Xi's ability can ensure that we walk in a straight line instead of a circle, and why we haven't even touched the stone plate?

I felt Gu Xi pulling me to speed up, and I almost couldn't catch up with him, so I could only trot. At this time, I really can't bother him, because don't underestimate the calculation of the step distance, it is nothing when walking slowly, and when the speed increases, it is a process of calculating the height of the brain, and I believe that all his steps are the same, without a trace of difference. Even in the course of the previous time, he had measured how many steps he had taken to get back to the same place.

It was almost twice as long as it had just been, but it was back in front of the city walls.

If we can find the stone plate, we may be able to let Xie Fu and the three of us lead the way, but the problem is that we can't even find the stone plate now, as if we are completely confused and lost in this space.

Gu Xi didn't turn on the flashlight light, the heavy breath was dissipating outside, and the hand holding me was gradually tightening, and I even felt pain later. I pulled out the flashlight from his other hand and turned it on, I am not him, I can't measure the situation by feeling and calculation alone, I need to see with my eyes! If there is nothing wrong with the identification process, then there must be something we have overlooked.

My eyes swept over the city walls and stone gates, even if Gu Xi shook off my hand and walked to the side, I didn't pay attention to it, and suddenly my gaze was fixed on a certain point. A few minutes later, I looked back thoughtfully, and in that moment, a thousand thoughts were rushing back.

"Gu Xi." I call softly.