It wasn't until Feng Ping entered the passage that he really appreciated the strangeness of this expedition, the spiral downward passage was arched, and the four walls were covered with the same pictures as in the previous room, and there seemed to be countless small stories. The pen %fun %pavilion www.biquge.info observed while walking, and he didn't know how many steps he had walked down, and Feng Ping hadn't even seen the same picture. Feng Ping noticed that there seemed to be several time marks in the upper left corner of each picture, although it was not clear the specific years and months represented, but it was obvious that these pictures were arranged in a certain chronological order, recording everything under the change of time like history.

The three of them just looked at the patterns on the four walls and walked down, and they didn't know how many steps they had walked, but they still didn't reach the end.

"Is there a bottom on this road, I guess we have gone down dozens of floors, why haven't we reached the place yet. Do you want to go down to the eighteen layers of hell all the time? The madman was a little mad.

Qing Xuanzi was very calm, and said: "I have walked 397 steps along the way, this step is slightly flat but also nearly 600 meters down, the hill just now should be so high, if you go down again, it may really enter below the horizon." ”

At this moment, Feng Ping, who was walking in the middle, stopped, and the madman who was numb and walked forward crashed into him, "Why did you stop suddenly?" "There's something strange about a madman.

"But what did you find?" Qing Xuanzi heard the movement behind him, and turned around to find Feng Ping staring at a picture in a daze, so he asked.

"These pictures are weird, I just looked at them all the way and always felt that something was wrong, but now I finally understand that I can't remember every picture."

"Can't remember?" When the two heard Feng Ping's words, they also began to think about it. Only then did I feel that something was wrong, every picture I saw from entering this passage was vague in my mind, as if I had seen it but could not remember it really, as if something was interfering with my ability to remember it.

When the two of them were puzzled by this, Feng Ping said again: "Although I can't remember the picture, I can be sure that this time just appeared." After saying that, he pointed to the marker in the upper left corner of a picture at the top of the passage and said, "If my guess is correct, the two markers in the upper left corner should represent the year and the day." Maybe they don't have the concept of the month, so they use two numbers to represent the year and month to record the time. And the two symbols have appeared together before. ”

"So their passage is too long, they've run out of recorded things, and now they're starting to record it all over again?" The madman asked.

"I don't think so, no one is so boring. In my opinion, there is only one possibility. ”

Qing Xuanzi's face changed instantly when he heard Feng Ping's words, and he asked with some hesitation, "What do you mean?" “

While the two of them looked solemn, the madman on the side couldn't understand what they were saying at all. Immediately shouted impatiently: "You two are smart, I'm stupid." Just don't play dumb riddles, what did you guess? “

Feng Ping looked at the madman, then at Xuanzi, and sighed with some hesitation: "Since the builder will not be bored enough to record a historical event twice, then there is only another possibility, that is, the painting we see now is the one we have seen before." That is, we are going around in circles! ”

"Going around in circles?" Feng Ping's words made the madman a little dumbfounded. Then he retorted: "How is it possible, we have been walking down the same road until now, there is no fork in the road, there is no uphill, and we have even been walking the road of spiraling to the lower left, how can we go to the original point again." “

"Do you know the Morbius Ring?" Feng Ping asked.

"The ring with only one face?"

"Yes. The Möbius Ring has only one side, and you can walk the whole ring at any point on this ring, but the same will never reach the end, and as you move forward, you will rise and fall but eventually it will only be within the scope of this ring. I think we're probably stuck in a similar place right now. “

"But we only went down, not up!"

"That's true, but you see. Human perception can be blinded, and you can feel it just now, although they are all moving forward, but the angle of the road and the proportion of rotation have changed, but it has always been very subtle. Although I don't know why this path completely blinds our senses, it should be possible to break through if we find the reason. “

"How do you break out?"

"I don't know yet, keep moving forward, and take a look this time."

Qing Xuanzi listened to the conversation between the two silently, and did not speak, but at this time he took the lead and walked out. Feng Ping took out a marker from his bag, made a mark on the wall, and then followed closely behind the madman and began to move forward. At this point, the three of them no longer cared about the carvings on the wall, but focused entirely on their perception of the road.

They kept going, and although they noticed a slight change in the path, and the angle of their progress was not always rotating in a counterclockwise direction as before, and began to bend a little, but they still found no other path. And when the three of them saw the mark they had drawn before, they finally gave up moving forward in a bit of a dejected way, and sat on the ground with their butts.

The three of them sat on the steps and looked at the wide and narrow passage of this person, and they were all a little discouraged.

"We're not going to be stuck here and can't get out, are we? Or do we walk upside down and see? The madman asked.

"It shouldn't be, why is there no fork in the road, this time I still didn't feel an obvious change, it's not logical." Feng Ping said very suspiciously, he looked at the marks he made, and it was obvious that this was the place where he found the repetition of the previous time.

And when the two of them had nothing to do, Qing Xuanzi spoke, and he asked Feng Ping with a serious face: "Are you eighteen years old this year?" “

This question made Feng Ping a little puzzled, and he was trapped and asked this, do you want to help yourself tell your fortune? But it was not good not to answer, so he said: "It's not full yet, my family has a lunar calendar, and I won't be eighteen years old until the ninth day of the ninth lunar month this year." Why do you keep asking this? ”

Who would have thought that Qing Xuanzi would be relieved when he heard Feng Ping's answer, as if he had found the answer. I saw the fingers of his left hand move slightly, and it seemed that he was really telling fortunes. He also said: "That is, I will only turn 18 years old on October 19 this year, right?" ”

"Yes, October 19 of this year." Feng Ping replied.

Seeing that he had received an affirmative answer, Qing Xuanzi said again: "Since you are not yet 18 years old, then I think we may have thought in the wrong direction, it should not be a problem with the design of this passage, but something else is interfering with us." ”