The words were not finished, as Feng Qingguo said that under his feet, Feng Daring shone the faint light of his flashlight under his feet, and suddenly saw his eyebrows: the stone slabs under his feet were not flat, but were rising one by one, but they were not obvious, and the height of each stone slab increased by about five millimeters, and Feng Qingguo also realized this discovery at the same time.

Regarding this new discovery, Feng Qingguo's thinking immediately became active, and then he said to everyone: "The height of the slate is increasing, so there must be a use for it, it should be that we are slowly climbing higher unconsciously, and then slowly circulating in some kind of mechanism." ”

Hearing Feng Qingguo's statement, the educated youth nicknamed Abacus said negatively: "Since the road is getting higher and higher, where did the gap go?" If we were indeed in a closed circle, and each slab increased in height to where we are now standing, then this increase would not be possible, and each slab is 30 centimeters wide. Assuming that the circumference is 2.5 miles, 2.5 miles is 1250 meters, and then divide by the width of the slate by 30 centimeters, we get that there are almost 4166 slabs here, and if the height of each slate increases by five millimeters, it is almost 20 meters, for example, starting from under our feet, increasing step by step, to a height of 20 meters, and then circulating to us, it should be a wall behind us that is 20 meters high, but there is no such phenomenon now, which means that your analysis is not valid. ”

For things in the unknown, everyone will not do meaningless arguments, after all, no one has a convincing basis, and can only practice to know: carefully watch where the height of the stone slab under your feet has gone.

As several people continued to bow their heads and move forward, a new phenomenon was discovered: the stone slab, which had been rising step by step just now, suddenly fell again, and the height of the descent was also about five millimeters.

Zhang Qing asked puzzledly: "It was high just now, and now it is low, what is this going to do?" ”

The abacus seemed to understand the Tao a little bit, and simply said: "Count forward from the descendant, how many pieces will fall in total, and then count how many blocks will go up to the higher one." ”

At an extremely slow speed, one by one the flashlights completely struck, and the flashlights that Xiao Si had been reluctant to turn on became the only light source in this narrow passage. Where there is no light and where people are aware of the danger, the instinctive fear of the darkness quickly explodes: as soon as the young man collapses, he howls hysterically and runs into the darkness behind him, leaving only the sound of the howl echoing, the sound is like the mournful cry of the wandering ghost, and everyone who listens is terrified.

Xiao Si asked timidly: "He's scared crazy, let's chase him?" ”

Zhang Qing usually has the best relationship with him, waved his hand and said: "Don't care about him, he is cowardly, and now he is crazy, let him vent, anyway, he will come back in a circle, let's do our business." ”

As soon as he finished speaking, he heard a "bang" sound in the dark, and it was fast, and there was no movement again.

"He must have hit the wall, leave him alone," Abacus asked Xiao Si for a flashlight, walked at the forefront of the team, lowered his head and carefully continued to count the slates. After another hour or so, he found the crazy Zhiqing, who had fallen to the ground in a coma with a bloody face. The educated youth, nicknamed "Da Zhuang", carried him on his back, and within a few steps, he reached the starting point of the low digits from the slate they had just made. The abacus used the statistics just now to analyze everyone: "There are a total of 4180 stone slabs here, the rise and fall of the stone slabs are special rules, from the first raised number of stone slabs is 1045, after the 1045th block, that is, 1046 pieces will change from increasing to falling, to 2090 pieces, it will be raised again, that is to say, if this ring is drawn on paper, it is the two low and two high positions against it, The result is a 5.225-meter-high arch, but since each slab only changes by five millimeters, we don't feel the height increasing or decreasing, if this is a mechanism, 5.225 meters is enough to make a fuss. ”

Feng Qingguo took over the topic: "The middle of the 5.225-meter arch should be the passage that disappears!" And the entrance to the passage can only be in the two lowest positions, and the trigger mechanism must be somewhere in the lowest position, that is to say, it may be around us, we look carefully, and the secret of the exit is about to be solved! ”

After encountering too many failures and having no concept of numbers, Zhang Qing asked: "How can you be sure that it is in the lowest position, not the highest or the middle?" ”

Without waiting for Feng Qingguo to explain, the abacus hurriedly said: "If there is an entrance to the highest position, then from a height of 5.225 meters through this circular diameter, that is, almost 400 meters to the lowest point, it is obvious that we will feel this when we come, so this is definitely impossible, and it is also impossible in the middle, the distance is too short, and the height difference is enough to cause notice, so it can only be at the lowest position." ”

When he wanted to pass the flashlight, Feng Qingguo walked in front of the team again, and carefully illuminated both sides of the slate with a yellowing light. Time passed like this, minute by minute, and the beam from the last flashlight disappeared, and everyone was plunged into endless darkness.

"Dead!"

The fear transmitted by the darkness spreads rapidly. When they couldn't find the exit from the cycle just now, everyone was depressed, although they couldn't see hope, but they didn't despair, and the darkness in this environment hit them hugely, almost summoning the fear in the subconscious of all the people present. Although the dizziness and swelling in the maze behind the quadrangle are swollen, the company of light is finally a psychological comfort; Repeating round and round in this endless cycle of passages, there is a bright courage, and in addition to consuming confidence, there is at least psychological support. The darkness around them now frustrates the trapped people's desire to survive, as if this dark passage could swallow everyone at any moment.

Feng Daring is not so easy to despair, otherwise he would not be worthy of the nickname "Daring", in the dark he asked softly: "Brother, you can go out with your eyes closed, does this sentence also work in this way?" ”

Feng Qingguo responded in a decadent tone: "This is an endless cycle of death, and it is the same with our eyes closed, here, we are not deceived by our eyes. ”

"Brother, I'm not talking about confusion, but we may believe too much in what our eyes see, since the blind man came out with his eyes closed, Zhang Qing and Xiaosi were also confused, why are these? Of course, the road will not come out again by itself just because we close our eyes, I think what the blind man said is that we walk with our feelings. ”

"That's right! How can I ignore this, I believe too much in the eyes to see, and in such a passage that looks the same, we see everything, why do we need to increase the height by more than 5 meters, this must have a use, the only explanation is that under the arch of more than 5 meters is a passage, the key is how we can uncover this mystery. Now that there is no flashlight anyway, instead of sitting back and waiting, let's try again. Now you're all touching me, you're all facing my direction, okay, now we're all on the same side, right? Now we are all touching with our hands to the left, feeling the difference, what is the change, the two people in front of us touch the position above the chest, the two people in the middle touch the position above the chest, Da Zhuang, you don't carry that kid on your back, you and whoever is behind you are in charge of the position below, the organ should be here. ”

In the silence, no one spoke, and in the small sound like a rat, the last trace of survival instinct supported everyone to advance at the speed of a snail in the dark, searching for life.