Because he couldn't understand this, Tang Ding recalled the scene when he had just stepped into the stone steps.

There are a few oddities about this staircase: First, the staircase is very low in height and very wide in width. And every twenty-third order, there is a right-angle bend that cannot be shaken, which is very regular.

It is precisely because of such regularity that Tang Ding does not believe that he will fall into such a puzzling labyrinth.

But there is a saying that the more normal things are, the more abnormal they are.

The low and wide stone steps, and his right-angled turn, seemed to grasp a suspicious point in his mind.

In fact, Tang Ding felt that there was a problem with this stone step at the beginning, the stone step was too short, and it was a typical waste of manpower and material resources to carve it so much, but why did he make such a low stone step?

There is also a doubt about the width of this stone staircase.

A flash of inspiration flashed through Dondin's mind, and he remembered an unconventional model he had overheard from his roommates in the dormitory---- the Penros Ladder.

Who is Penrose and what is the Penrose Ladder?

Penrose is a renowned British mathematical physicist and Professor Emeritus in the Department of Mathematics at the University of Oxford. It was he who proposed the Penrose Ladder.

The Penrose Staircase is: four staircases, connected by four corners, but each staircase is upward and can be extended indefinitely.

Tang Ding could no longer remember the actual scene of the big discussion in the dormitory, who said it, but he could remember the conclusion that the majority prevailed over the minority at that time: the Penros Ladder was a kind of pseudoscience.

Everyone agrees that the Penros ladder is a kind of visual confusion, this kind of ladder is a spiral shape of the ladder, through the naked eye can be seen, this kind of ladder can indeed be carried out in a loop, but in real life, this type of ladder cannot fulfill its function, this ladder is a kind of visual confusion between two and three dimensions, is a very typical pseudoscience.

At that time, although Tang Ding did not participate in the discussion, and his opinion was the same as that of most people at that time, he did not believe that there was such a staircase in the world with four corners connected but each staircase going up, which was completely impossible.

But today, Tang Ding personally encountered this strange scene. The four corners of the staircase he walked on were indeed going upwards, and he did come this way, if he hadn't experienced it himself, Tang Ding would never have believed it.

Moreover, Tang Ding did not expect that the Panlos Staircase, which was only proposed in the fifties of the twentieth century, would exist in ancient Chinese tombs thousands of years ago, and this staircase really bothered Tang Ding.

However, there is still a question, how on earth did they get trapped in this Penrose Ladder?

The Penros Ladder is magical, but it can't exist out of thin air. And how did you get there?

Now that he has fallen into the labyrinth, Tang Ding simply can't leave.

Dondin began to analyze the strangeness of the Penrose staircase he had encountered.

Tang Ding gradually felt that he seemed to have figured out something. For example, if the bend you encounter is not a right angle, but a slightly larger or close to a right angle, it is difficult for ordinary people to notice this slight difference in angle. However, in the ideological understanding, this is not a right-angled angle, but is treated as a right-angle, and the difference in direction accumulated by this point will be completely different in the end, resulting in a confused sense of direction.

If the big or small bend is to confuse one's sense of direction, then the low and wide of the staircase will have the same effect, that is, to confuse people's vision, to give people the illusion of spiraling upwards all the time.

In addition, it also attracted Tang Ding's attention: the passage in front of him is illuminated by permanent lights, why is the passage of this staircase pitch black, and he still has to bring his own lighting tools?

This should also be a trick. In a dark environment, coupled with the fact that the slope is very small and the stone steps are large, as long as the length is long enough, it will cause the feeling of going uphill and downhill is not clear, and this staircase should have a slope, but the slope is too small to be noticed, and these factors combine to produce visual misunderstandings.

Through the clever use of shadows and special designs, people are drawn into the labyrinth without noticing.

After thinking about this key, Tang Ding really had confidence. Since all this is a blinding method, then I simply closed my eyes and experienced this blinding method and the actual situation through the touch of my body.

After closing his eyes, although his naked eyes were closed, Tang Ding immediately felt as if he had opened his heavenly eyes.

Tang Ding moved to the left side of the stairs, and he found that the steps on the left were different from the stone steps on the right before, at least not at all in the angle of inclination.

It turns out that the stone steps with this visual difference are caused by the stone steps themselves, but this gap is very small, and ordinary people can't feel the difference at all, but after the difference is magnified, I'm afraid that this little difference is even more imperceptible, let alone feel it personally.

But since Tang Ding closed his eyes, the sense of touch in his body was extremely inspired, and his sense of sensing was also very sensitive, so he clearly sensed this change.

It turns out that this Panloth Ladder was not first proposed by the West in the twentieth century, but thousands of years ago, the Nine Heavens Xuannu had already played the leftovers.

It's easy to get out of this Penros Ladder, but there is a Penloth Ladder that has fallen into another trap, but since the first one is broken, the rest is easy to say.

As soon as Tang Ding broke through the three Penloth stairs in a row, he felt that his eyes suddenly opened up, and he returned to the human world from the virtual.

After exiting the Penrose Staircase, Don Ding saw a clean and clean indoor square. Of course, this is not a square, but the tomb of the Nine Heavens Xuannu.

Because after these three levels, it is the real Nine Heavens Xuannu Tomb.

However, for some reason, although he successfully saw the tomb of the Nine Heavens Xuannu on this trip, Tang Ding still sensed that he was likely to return in vain this time.

This is unreasonable, I have already arrived at the tomb, why would I return in vain? Unless this is not the tomb of the Nine Heavens Xuannu at all, but this is not like it, because the mechanism encountered along the way is ambushed, except for the Nine Heavens Xuannu, no one can set it up.

But since he arrived at the Nine Heavens Xuannu Tomb, he will not and cannot return in vain.

In the center of the hall is the tomb of the Nine Heavens Xuannu, because there is also a tombstone.

But the strange thing is that after everyone came out of the Penros stairs just now, the entire hall automatically lit up with everlasting lanterns, and a bouquet of ceremonial flower-like objects fell from top to bottom, directly falling into the big pillar in front of the tomb of the Nine Heavens Xuannu, and there was a big iron pot on the big pillar, because of this little spark, it burned violently.