The nail key is not Tang Ding's originality, but because Tang Ding is good at studying when he is studying, he really knows about this key.

It is not difficult to make this crutch key, as the saying goes: those who are difficult will not, and those who will will not be difficult.

As long as this thing understands the principle, it is a one-size-fits-all approach.

Tang Ding used the crutch key he made, and after breakfast the next morning, he finally opened the stone door.

In fact, Tang Ding began to experiment with this crutch key from dawn, which is his knowledge from the book into practice, and after some efforts, he successfully succeeded.

In fact, others thought that Tang Ding would open the stone door easily, but in fact, this was the result of Tang Ding's hard work for more than two hours.

Tang Ding poked the crutch key in, it didn't work at first, Tang Ding continued to improve, and finally used the crutch key to open a crack in the stone door, Tang Ding covered the crack with a stone, and then he held his breath, squeezed in through the crack, moved the door sealing stone, and successfully opened the stone door.

The stone door was opened, and there was a particularly unpleasant smell coming out, which was due to the fact that it had been sealed and closed for too long, even if there was a gap in the stone door, but after all, it had only been a day since the stone door was dug up, and the musty smell could not be revealed at once.

It took three days for Professor Zuo to let everyone in.

In the past three days, Li Mingwen has prepared a lot of utensils, such as flashlights, gas masks, oxygen tubes and other utensils.

And because of the opening of the stone gate of the tomb, the Provincial Cultural Bureau coordinated a company of armed police soldiers to come and set up a fence.

As soon as the stone door opened, everyone thought that this tomb was basically going to be revealed to the world, but to everyone's surprise, this was just the beginning.

After three days, everyone was finally able to enter the stone gate and find out.

However, not all of them entered the tomb, but selected volunteers to go in to find out, and then the rest of the large army went in again, in order to prevent accidents.

Volunteers are initially set up as two people, so they can not only consult with each other, but also support and help each other.

The first person to sign up, surprisingly, turned out to be Qin Yujie. Qin Yujie didn't talk much, but she dared to be the first to sign up among the male archaeological team members, and this courage was admirable.

However, after Qin Yujie signed up, no one continued to sign up, although this tomb visit is said to be a thrilling job, but if it is too exciting, it will not be interesting to stimulate your life.

Tang Ding saw that everyone had no intention of signing up, and Professor Zuo Qingming was about to speak, as if he wanted to go in by himself, at this time, of course Tang Ding couldn't let the teacher take risks, he reported himself and signed up bravely.

Zuo Qingming looked at Tang Ding and nodded, "Be careful!" and then told the student Qin Yujie: Be careful.

In addition to giving each of them a flashlight and a gas mask, Li Mingwen also gave each of them a walkie-talkie with an adjusted frequency to facilitate communication.

Tang Ding and Qin Yujie nodded to each other, and the two entered the stone gate side by side.

The passage behind the stone gate is paved with bluestone, the width is enough for four people to parallel, the height is about one and a half people high, not depressing, and after three days of ventilation, although there is a slight musty smell inside, but it is not stuffy.

The terrain behind the stone gate is not flat, but gradually extends downward, and the slope is not too steep, almost as if people can just feel the slope.

Tang Ding also noticed that the passage was also made of bluestone, and the top of the passage was curved, like an arch bridge, which was the easiest shape to unload.

This passage is not too long, nor too short, it is more than 200 meters, and this distance is exactly the distance from the stone gate to the original surveyed tomb.

This arched passage is no small project in modern times, let alone in ancient times when tools were scarce.

For more than 200 meters, Tang Ding and Qin Yujie walked very slowly, because the legend said that there was a hidden mechanism in the tomb, and one could not step on it well, with a thousand catties of stones falling and a flap spike trap below.

It's all deadly stuff, and there is no room for the two of them not to be nervous.

Tang Ding is better, after all, he is a master of art and courage, and the step gang under his feet can save his life in a critical moment. But Qin Yujie is different, her steps are heavy, she doesn't have any effort in her body, life and death are not up to her, it all depends on the will of God.

Maybe others think that the trap of this tomb, the theory of hidden weapons, is too empty, and think that this is all a legend, they feel that even if there is an ambush, this pre-Qin Dynasty is thousands of years ago, even if there is a mechanism, it will have long been invalid, besides, to create a mechanism with a sophisticated design, is it so easy?

However, others think so, Tang Ding doesn't think so, when the archaeological exploration of Huiji Mountain, there was a mechanism in that ancient tomb, and the design of the mechanism was exquisite, which made modern people ashamed.

Where the mechanism is not disposable, it can still be used repeatedly, and the design in it is thousands of times more difficult than the disposable mechanism.

It is precisely because of this experience that Tang Ding has always believed in the mechanism in the tomb.

It's not a mistake to be cautious.

This is also the reason why when Professor Zuo asked about the two volunteers, Tang Ding did not take the initiative to sign up.

Therefore, Tang Ding still admires Qin Yujie's courage.

Qin Yujie obviously didn't have this kind of experience, she was parallel to Tang Ding at first, but after walking dozens of steps, she was blocked by Tang Ding intentionally or unintentionally.

However, there was no mechanism along the way, it can be said that there was no danger, and the two of them also successfully reached another stone gate at the end of the passage.

Because the two are gradually descending, therefore, the two of them do not have an intuitive understanding of the depth, but through the rustling sound from the walkie-talkie, it can be preliminarily judged that the distance from the stone gate to the center of the tomb is 200 meters, and the limit of the walkie-talkie is 300 meters, of course, this is only a theoretical value, maybe this distance is only 250 meters, so according to the calculation of the Pythagorean theorem, the depth here is about 100 meters.

This is not a small gap from the original judgment that the tomb was below 60 meters deep.

However, this can also prove the grandeur of this tomb, and it can also prove that the identity of the people in it is not simple.

Another stone door!

Tang Ding and Qin Yujie glanced at each other.

If the stone door is the outer door, then the stone door should be the main entrance of the tomb.

The two hurriedly reported the situation here through the walkie-talkie to Professor Zuo and the others who were waiting on the other end.

Outside the Big Stone Gate.

Due to the limitation of distance, the signal of the walkie-talkie is very weak, and it is accompanied by the sound of sizzling, but Professor Zuo and Li Mingwen can hear Tang Ding and Qin Yujie who are in and out of the room.

However, when he heard that there was a small stone door inside, Professor Zuo didn't expect it.

He has never seen a door in this door, nor has he seen it in any history books.

"Let's go, go in and have a look!"

As soon as Professor Zuo discussed with Li Mingwen, the two decided to enter.

Since there was no danger, of course they also wanted to see the inside of the tomb with their own eyes.

However, just when Professor Zuo led everyone and walked halfway, a scream suddenly came out, and after the researcher brought by Li Mingwen screamed, he suddenly disappeared.