In front of the two of them and a fox, there was a black hole, like a big mouth that could devour people and everything.

Anyone with a discerning eye knows that there must be something strange about this big mouth, but they can't help but leave. Because I haven't found the tomb of the Nine Heavens Xuannu yet, and there is only one staircase here.

Why is there any weirdness? There's no weirdness here. Whether it was the exquisitely controlled stone gate, or the dangerous stone slab that had just walked over, they were all mechanisms, but they were all broken through by Tang Ding without danger.

Facing the dark hole in front of them, everyone can only move forward bravely.

The original stone walls, as well as the stone passages that had just been walked through, were all illuminated lanterns. The entrance to this dark cave, which has no lights, looks so dangerous, and it makes people feel bottomless.

"Did you get a flashlight?" asked Dondin.

"Oh, bring it, bring it. Huang Yongjue prepared a flashlight, but after scrambling to find it, he opened it and tried it, but it was damaged by blisters. Just now, Huang Yongjue fell into the boiling water river, and after staying in it for a long time, the flashlight got into the water and could not be used.

"Forget it, I'll do it. Tang Ding saw that the flashlight was not on, so he went to the wall and cut down two everlasting lamps with the dragon descending sword to serve as lighting tools.

People yearn for light, and with light, people suddenly feel a lot more confident.

Tang Ding took the lead, carrying the ever-bright lamp and entering the dark hole.

The nine-tailed fox followed, and finally Huang Yongjue brought another ever-bright lantern.

The black entrance to the cave was not long, only about twenty or thirty meters long, and it came to an end. At the end of the cave is a long, slightly upward staircase.

Tang Ding still led the way and took the nine-tailed fox and Huang Yongjue onto the stairs.

When Tang Ding stepped on this staircase, he felt that this staircase was a little strange, why was it strange? Because the height of each step of this staircase was too short, much shorter than the normal staircase, and it was very awkward to walk.

Originally, you could step on the height of two steps of stairs in one step, but now you can only step one step at a time, because although the stairs are short, they are very wide, and it is very difficult to cross two steps at the pace of a normal person.

Of course, with Tang Ding's bouncing power, it was no problem to pick seven or eight steps at once, but he still walked step by step, he wanted to see what was strange about this staircase.

If you want to talk about the mechanism, Tang Ding was tempted when he landed, he didn't walk like an ordinary person, but his feet slid against the ground, don't underestimate this slide, it can adjust the center of gravity of the body as you like, if the front is a flap, or a mechanism, Tang Ding can quickly withdraw the force on his feet, or balance the force on his feet, dodge the mechanism, or make the mechanism unable to start.

However, Tang Ding experimented with more than 20 steps, and he found that there was no mechanism on this step. However, at this time, the steps turned at a right angle here, and Tang Ding turned with the steps again, and after turning the corner, there were more than twenty steps. This is followed by another right-angled corner.

After turning seven or eight corners, Tang Ding was sure that the stone steps should indeed have no mechanism.

But after every twenty or so steps of this stone staircase, it is a bend. By standard, every turning point is a twenty-three stone steps.

It seemed a bit like a labyrinth here, and Downing suddenly had that feeling.

Because these right-angled bends are so frequent, although at first Don Ding remembered the road when he walked, but after twenty or thirty of the same right-angle bends, who would remember the road again? And this constant right-angle bend gives people a feeling of dizziness.

But the more you walk, the more curves there are, as if there is never an end, and when you walk, they are all curves. After the twenty-three stone steps, there is a curve, which seems to be very regular.

Tang Ding took the nine-tailed fox and Huang Yongjue for more than two hours, and he didn't get out of this bend.

Tang Ding had a mind to explore how long this bend was, and he didn't bother to remember the number of bends, he just walked with his head bored, and the nine-tailed fox and Huang Yongjue had great trust in Tang Ding, so when Tang Ding left, they followed behind.

Tang Ding, who was bored, suddenly stopped, and the nine-tailed fox and Huang Yongjue behind him were walking very fast with Tang Ding before, and as soon as Tang Ding stopped, one person and one fox almost knocked over Tang Ding.

"Why don't you leave?" asked Huang Yongjue.

"Wait," Dondin made a wait-and-wait gesture, "I don't think something is right." ”

"What's wrong?" asked the nine-tailed fox.

"Look at the stone steps here, it looks like you'll never get to the end. ”

"Yes, why hasn't this stone staircase come to an end yet?" the nine-tailed fox also sensed that something was wrong.

"This is what is wrong, we are afraid that we will have to walk this stone step for more than two hours, according to our speed, at the speed of normal people, five or six kilometers per hour, we are walking briskly, the speed should be more than ten kilometers per hour, we should have walked more than twenty kilometers, but we have not reached the end yet. ”

"yes, it's too long. ”

"This stone staircase is not just a matter of length, how many years does it take to carve 20 kilometers of stone steps? And it's not just about carving stone steps, if it's a complete mountain, you have to make a tunnel into it. With the help of modern large-scale metro shield machines, it may take several years to excavate these 20 kilometers of mountain, let alone in ancient times, when even small tools were scarce. ”

"And what do you mean?" asked the nine-tailed fox.

"I have a feeling that we are in a labyrinth. ”

"Ah, the maze, where is the maze?"

"This stone staircase is the labyrinth. Tang Ding said with great certainty, "I feel that we seem to be moving forward now, but in fact we are going in circles in place. ”

"Oh, it's impossible, we haven't turned back, how can we go around in circles?" said the nine-tailed fox.

"We can make a mark here, and we'll be back in a minute. Tang Ding used the dragon sword to mark a five-pointed star on the wall, and then the two of them started to set off again, and sure enough, after walking one hundred and eighty steps and turning four right-angle bends, they really returned to the place where Tang Ding had just drawn a five-pointed star.

"What's going on?" the nine-tailed fox wondered.

Tang Ding also didn't know what to do, and he didn't understand the right words and walked into the labyrinth of this step.

So, Tang Ding changed and marked on the wall of the stone wall, so he walked to the starting point again.

However, Tang Ding still didn't understand the truth, so Tang Ding went again.

Strange, why do you feel that every stone step you are going up, it stands to reason that it should be spiraling upwards, but why do you circle in place?

Tang Ding was puzzled.

It stands to reason that the stone steps under his feet have always been upward, and after turning around, it should have been Tang Ding who appeared above the place, but why did it appear in the same place?