You must know that people in this world talk about the reincarnation of life and death, and reincarnation requires the integration of three souls.

In this world, although the monks regard mundane mortals as ants, they still have to pay attention to this aspect, at least on the surface. Moreover, there is too much of this kind of thing, there is a word called "hurting the heavens and harmony", and hurting too much will lead to heavenly calamity.

As for this Baiji Daoist, how many experiments he has done, how many human souls he has used, and whether he was finally destroyed by the righteous path to eliminate demons, or is the Heavenly Tribulation about to be wiped out? Ye Zan didn't have the heart to guess, so he ******** put away all the things in the study.

In addition to the notes, there are some other books in the study, although they are not very useful, but in order to enrich the database, Ye Zan did not leave any of them, and all of them were thrown into the other dimensional space. On the other side of the dimensional space, Ye Zan doesn't need to look through it personally, and he has his own set of methods for automatically entering the database.

After searching the study, basically the information about the mechanism was in hand, and Ye Zan did not seek to rely on these materials to become a contemporary master of the mechanism. In fact, after thousands of years of evolution, these tricks may have long since become obsolete, and not everything is always as old as possible.

Ye Zan just hopes to understand the mechanism and combine it with technology, firstly, to cover up the characteristics of scientific and technological products, and secondly, to learn from each other's strengths. For example, the rune protection of the Bronze Terracotta Army, in Ye Zan's opinion, even if it is not stronger than the energy protection of technology, has its merits.

By this time, Ye Zan's goal of coming in had already been completed. However, he hadn't forgotten his original goal, and now this little gain was nothing compared to finding clues to control the secret realm.

Although the Hundred Machines Daoist had left the secret realm thousands of years earlier, judging from the many notes and materials left behind, he must have left in a rather hasty manner. Moreover, even if you are not in a hurry, there is one thing in this secret realm that cannot be taken away by the people of Baiji Dao.

The secret realm, Ye Zan has seen so much information about the Yuqing Sect, and he still knows a lot. The origin of the secret realm is said to be that after the big world was broken, the large fragments generated many domains, and those small fragments that were not enough to generate the domain realm were refined into the secret realm after being obtained by the great power.

And to refine the secret realm, the first thing is to refine the world power of the world fragments into a boundary monument. This boundary monument is like the central control system of the secret realm, the first is to determine the ownership of the secret realm, and the second is used for all aspects of adjustment. For example, the prohibition of this secret realm is controlled by this boundary monument, and it can be said that the boundary monument is also the key to control the secret realm.

More importantly, the boundary monument and the secret realm are inseparable, where the boundary monument is, the secret realm is there, and vice versa. In other words, since the secret realm is here, then no matter what the reason, the Baiji Dao people must not have taken the boundary monument away.

Of course, even if Ye Zan found the boundary monument, he didn't have the mana to refine it now. But since you have come here, you have to look for it, even if you can't refine it, bring back the information on the boundary monument, and find a way to find that Xuan Yuan Dao. After all, that Xuanyuan Old Dao was an Earth Immortal Dao Ancestor back then, and now his strength is gone, so it can be seen that his knowledge is still there.

"There is no main hall, no study, and no other two rooms, so it seems that there is only one underground. Ye Zan turned around, there were only a few rooms here, but he didn't find any clues about controlling the secret realm.

Exploring the underground, replacing it with someone else, may have to dig holes everywhere, or search for hidden mechanisms, but for Ye Zan it is much simpler. He directly mobilized the high-altitude probe, and then turned on the deep scanning mode, which can even scan thousands of meters of mineral deposits underground, not to mention the existence of a secret room or something.

This sweep really swept out something, and at a depth of nearly a thousand meters below this palace, it swept into a space that was not inferior to the previous arena. In the center of that space, there is an altar that occupies a large area, just like the altar when entering the secret realm, and in the altar stands a stele-like object, and the Eight Achievements are the boundary monuments of this secret realm.

However, the problem is that there are no passages on all sides of this underground space that lead to the surface. In other words, if Ye Zan did not use a high-altitude detector to scan the underground, but really went to find some hidden mechanism, the final result would be that he could not find anything.

This method is good, no matter how secret the passage is, it is better to have no passage at all. As for the Hundred Machines Dao people, how do they usually go down? Ye Zan is not difficult to guess, the cultivation of the Hundred Machines Dao people is definitely not low, as long as they know the location, they can enter it with a random earth escape method.

Moreover, there is also a possibility that the Hundred Machine Dao people are the masters of the secret realm, maybe they can change their positions in this space at will, and maybe a thought will reach the altar.

Ye Zan doesn't know how to spell, and naturally he doesn't know how to escape, but this can't help him. Bring a drill rig directly from the other dimension, and he doesn't have to go down in person anyway, just drill a small hole that leads there, and some miniature probes will get the information on the boundary monument for him.

Nearly a kilometer deep is nothing, and in less than a quarter of an hour, the drilling rig has made a cup-sized hole in the ground. Then, the electronic fly flew down the hole, and soon entered the underground space.

Under Ye Zan's command, as soon as the electronic fly entered the underground space, it immediately flew towards the altar. However, as soon as a few electronic flies reached the edge of the altar, a flash of lightning appeared, crackling and crackling, and several electronic flies fell to the ground in smoke. Obviously, the Hundred Machines Dao people also arranged a ban on the altar, but this is not surprising, after all, this boundary monument is too important.

Ye Zan wanted a subtle appearance, not a rough outline, and with the visual distance of an electronic fly, he couldn't go close to shoot, and it was a little difficult to see the content on the boundary monument clearly.

However, this is also difficult for Ye Zan, the high-altitude probe flies at an altitude of tens of thousands of meters, and it can photograph the appearance of a person on the ground, what is the distance from the altar. A group of microrobots were sent down, forming a high-powered detector below, and moving to the edge of the altar facing the boundary monument.

Finally, a clear picture of the front of the boundary monument appeared on Ye Zan's visual screen. There was no text on the monument, but it was engraved with all kinds of dazzling patterns. It's just that, to be honest, clarity is clear enough, but what the above content means, Ye Zan can't understand at all.

Ye Zan could only let the probe surround the altar, record everything on the altar, generate a model under the calculation of the wisdom brain, and leave it to ask Xuan Yuan Lao Dao when he returned.

After everything was done, Ye Zan collected the detector and refilled the hole that had been punched, and it was finally time to leave here.