There is also archaeology in the world of science and technology, and there is an archaeology industry, which initially tested its own antiquity, and later tested the antiquity of other civilizations in the interstellar era. In archaeology, the study of the documents of various civilizations is naturally the top priority, which involves the problem of preservation.

Like the current situation in Yezan, it is not uncommon in archaeological activities. If you find an ancient tomb or ruin, if you open it rashly, it may not have a devastating effect on some gold and silver artifacts. But those documents include paper, wood and bamboo, and even animal bones and tortoise shells, etc., which may have already turned into ashes, but they have not been subjected to external forces and still maintain their original appearance, let alone touch it, and the slightest air movement will be completely destroyed.

As a result, there is a technology that uses a smart nanomaterial to replace the decaying fibers by penetrating the inside of the material to keep the material in its original form.

The contents of this study may not have reached the point of turning to ashes, otherwise those books would have long since disappeared with leaky doors and windows. However, judging from the condition of the main hall outside, it must be quite rotten, and it may not be possible to turn the pages at all, so it is time to use this method.

Ye Zan first used film to paste the large air leakage in the house, such as the window without window paper, so that the room became a basically closed space, leaving only a small hole with the size of a bottle. Then, he took out a suitcase-sized machine from the other dimension, and a fist-sized aluminum can attached to the machine. There was a pipe at the other end of the machine, and Ye Zan attached the hose to the small hole that was reserved, and then turned on the machine.

As the machine turned on, a cloud of mist began to slowly disperse through the window through the film sealing the window. It didn't take long for the whole room to be out of sight, completely filled with the mist. Ye Zan glanced at the data displayed by the machine and determined the density of the fog in the house, then turned off the machine again and waited quietly outside the door.

However, Ye Zan didn't have to wait long, and after the machine was turned off, the fog in the house had begun to fade. After waiting for less than a quarter of an hour, the fog in the room completely disappeared, and it didn't seem to be the same as before. But this time, Ye Zan was not so cautious, and directly reached out to push the door open, and the house did not change because of this.

Ye Zan came to a desk and picked up a book on the table very casually, the book that should have been broken at the touch of it, but it looked quite strong at this time. After all, this technology is not a step back in time, and while the intelligent nano material solidifies the paper, it also gives the paper a strong feeling of plastic.

Of course, this change will not affect the reading.

Ye Zan turned two pages, and the handwriting on the book is a relatively old font, which is at least more than 5,000 years old through the comparison of the brain database. From this point of view, unless the owner of the secret realm deliberately uses ancient characters, it can basically be speculated that the history of this secret realm should be more than 5,000 years.

Ye Zan didn't plan to use scientific dating to determine this result, after all, this world is still very different from the technological world. This world is a world with the special energy of Reiki, and under the influence of Reiki, many things are different from the world of science and technology. For example, the carbon 14 dating method, which has been used for a long time in the world of science and technology, is completely inapplicable in this world.

Anyway, Ye Zan didn't really come to archaeology, so it doesn't matter if it's 5,000 years or 6,000 years, finding something useful for him is the right topic. For this purpose, Ezan may be more of a tomb robber, even though this is not a tomb.

Ye Zan got the book, which was placed directly on the desk, perhaps it should be said that it was a notebook, and nearly half of it was blank at the back. The cover of the note is made of animal skin, and nothing is written on the cover, which is not surprising, who would have nothing to do with a name for their note and sign their own name.

The content of the notes is indeed related to the mechanics, but more of them record the results of some experiments. Even, some of the terms used in it seem a bit cloudy in the eyes of Ye Zan, a person who has not been exposed to mechanical techniques.

Obviously, if the Lord of the Secret Realm had written down all his research on the mechanism technique in his notes, then this should have been a note in the later stage of research in Ye Zan's hand. Since there is a late period, then there should be a late period, and Ye Zan quickly found several identical notebooks on the bookshelf on the side of the room.

In the first notebook, Ye Zan finally found the identity of the Lord of the Secret Realm. This master of the secret realm calls himself a Hundred Machines Daoist, but this name makes Ye Zan very unfamiliar. Although he had read a lot of materials involving various sects, he only knew that there was a sect called the Thousand Machine Sect, and as for the relationship between the two, at least for now, it was impossible to know.

The notes of these hundred machine Taoists, and the tricks involved, are almost from scratch, just like a beginner gradually becoming a master. This is very advantageous for Ye Zan, just by looking at these notes, you can learn the technique from shallow to deep, and you don't need to be taught by a teacher.

However, this also makes Ye Zan a little strange, this is not like only studying intelligent mechanism puppets, but more like studying mechanism techniques, and perhaps even creating mechanism techniques.

Thinking of the previous speculation that this secret realm might be five or six thousand years old, Ye Zan suddenly thought of a question. In this world, the Organ Technique is not an ancient inheritance, in fact, it is the era of the Xuan Yuan Old Dao 10,000 years ago, and there is basically no complete Organ Technique inheritance.

In other words, this Baiji Dao person, even if he is not the creator of the current organ art inheritance, should at least be one of the participants in the creation back then.

However, again, Ye Zan didn't come to archaeology, no matter what the identity of the Baiji Daoist was, getting these notes was a big gain. From the notes, Ye Zan also found something related to intelligence, and he was really shocked when he saw it, the intelligence of those puppets was actually related to souls.

It is no wonder that various forms of puppets have corresponding forms of performance, such as the tiger form behaves like a tiger, and the wolf form behaves like a wolf, because they contain the soul of a tiger or wolf. And those humanoid puppets, including the four bronze terracotta warriors, were undoubtedly used for human souls.

Of course, judging from the notes, in order to ensure the autonomy of the puppet, it is necessary to have enough control, whether it is a beast soul or a human soul, it is all processed. There is a saying in this world that there are three souls and seven spirits, after a person dies, the soul of heaven returns to heaven, the soul of the earth returns to the earth, and the soul wanders and is buried. And this Baiji Daoist is to detain the human soul and refine it into a puppet.

This kind of approach, even if Ye Zan is from the world of science and technology, he feels a bit evil. And in this world, playing with people's souls can be said to be close to the practice of the Demon Dao, at least on the surface of the righteous path, this kind of thing is not allowed.