This is a technique that Yun Shi taught to Mo Zhiyu when he was recuperating in Nanlu, and to give full play to his Yuan Force control fine ability, he could figure out the structure of the mechanism in the shortest possible time.

For a formation cultivation genius like Yun Shi, as long as the structure is figured out, it is a matter of minutes to crack a mechanism. But even if the conditions don't allow the use of this method, a genius of her perverted level, it is still a matter of minutes to crack a mechanism.

Mo Zhiyu thinks that his talent in this area is not as perverted as his own daughter-in-law, but in the twenty years of waiting, he has not read less books and memorized many basic theories of the mechanism. And this stone door is just a relatively primitive mechanism.

Mo Zhiyu suddenly removed the palm placed on the stone door, and at the same time collected all the Yuan Force vines that were emitted. Then he fumbled around the stone door, lifted a patch of moss, and found a small hole.

Mo Zhiyu opened his palm slightly, and the Yuan Force quickly gathered and condensed in his palm, and finally formed a key with a substance, but this key was filled with Yuan Power that should be formless and substantial.

Mo Zhiyu inserted the key into the small hole in the stone door like this, twisting it three times on the left and three times on the right. Then as soon as he let go, the key condensed by Yuan Li dissipated, and the stone door slowly protruded forward, but it did not open directly, only a corner.

This is the inadequacy of this ancient technique, this technique only exposes the real door cracks, but does not care about opening the door, and finally has to be carried open by the person himself, which is really placed more than two thousand years ago, the first Chentian Emperor and that person, anyone who wants to pass through this secret door must take three or four strong men all the way.

Mo Zhiyu clasped the crack of the stone door with one hand, and lifted it upwards vigorously, and with the slight sound of stone rubbing, the stone door was lifted by him, but he didn't open it completely, but just opened enough space to enter.

He was holding his breath tightly, worried about what exhaust fumes would be inside, but the amazing thing was that the air behind the stone gate was not stuffy at all, but fresher than the air on the embankment. It seems that the ventilation effect inside is very good.

Mo Zhiyu didn't hesitate any longer, the cat bent his waist and got in, as soon as he entered the cave, as soon as he let go of his hand, the stone door closed directly by itself, and from the outside, it was no different from just now.

Although the air behind the stone gate was good, there was no light. Fortunately, Mo Zhiyu doesn't need lights, and when a person acts, he can directly use his talent for night vision, which is more powerful than a cat.

He walked along the tunnel, and after not far he began to descend, and the direction of the way down was not forward, but backward.

This also confirms Mo Zhiyu's judgment that this secret door does not lead to a hidden place outside the palace, but directly to the palace.

After walking for a short time, I entered a relatively humid area, and the walls were still seeping water.

Mo Zhiyu can feel that there is a huge amount of water system Yuan Force flowing at the top, it should be the moat, and before that, he will really enter the palace.

When the surrounding walls and soil gradually no longer carry water vapor, then you have truly entered the palace.

At this time, Mo Zhiyu finally saw the light, and at this moment, he heard the human voice.

"It's really eight lifetimes of bad luck," someone was complaining, "those brothers, which one of them is not being assigned to Yu Linwei, and the gold armor is not to mention how majestic it is." You can also swagger around the street and hook up with young and beautiful girls. ”

"It can't be helped." Another voice said, "You also said that they are Yu Lin Wei, and they are placed on the table, and we are Dark Yu Wei, so we can only do things that cannot be seen on the table." It's good that we're here to guard the tunnels, and the rest of the brothers are all doing some dirty work in the big night. ”

"That's just as well," the voice that had spoken earlier was a little muffled, as he was eating a piece of chicken thigh. And the other man was baking the fire, because the temperature under this ground was much colder than on the ground.

Just when the two of them were chatting happily, Mo Zhiyu had already quietly come to their side. It's just that he hid behind the corner of the passage, just hiding in the darkness that the bonfire couldn't illuminate, so that the two couldn't find it at all.

Mo Zhiyu took a closer look at the passage behind this, and found that there was a rope bridge in front of him, you must know, rope bridges generally do not have a long lifespan, even if the best craftsmanship and materials are used, after a few hundred years, those ropes and wood will almost rot. But obviously, this rope bridge seems to have just been replaced, and the wood and ropes are very solid.

Moreover, the space connected behind the rope bridge is lit up with stars, and it seems that this is still very wide, could it be that there is an underground world under this imperial city like Linqi?

The guards next to him were still chatting about some topics, which sounded worthless. Mo Zhiyu didn't bother to stay here any longer, and just walked through it, his actions were like ghosts, like a wind blowing.

The dark feather guard who was roasting the fire pressed the direct robe, and said very strangely, "Huh? Where did this wind come from, so strong? ”

The dark feather guard who was eating the chicken leg laughed at him and said, "What are you thinking about?" Isn't it just the wind blowing from the tuyere? This is not Wolong Mountain outside the city, and there will be no resentment from the emperor's relatives to you. ”

"you, what the hell is going on here?" The dark feather guard who was roasting the fire also smiled, and he didn't think much about it, and continued to roast and live.

And the ink delirium that passed through the two dark feather guards like the wind also crossed the rope bridge like the wind, and came to the other end of the rope bridge, but it was a stone pavilion. He looked around at the stone pavilion, and saw that the surroundings were full of natural rocks, and it seemed that the geology of Chang'an was very peculiar, all so deep and all big stones, and there were very few mud blocks.

This is the only way to fit into such a large space.

However, this space is not as big as Linqi's, and those stars are Yuanli spars dotted on the rocks, which have a certain lighting effect. So Mo Zhiyu continued to go down alone.

Further down, there were more forks in the road, and there were more guards, almost to the point of a sentry of ten paces. However, there is no reliance on the Yuan Force Array here, and compared to the Yun family, the level of security here is just like this, and Mo Zhiyu is simply unimpeded here.

But the further down he went, the more familiar he felt about this road, as if he had walked it.

(End of chapter)