There is also Archaeology in the world of science and technology. Archaeology is an industry. At first, it tests its own antiquity, and then it tests the antiquity of other civilizations in the interstellar age. In archaeology, studying the literature of various civilizations is naturally the top priority, which involves the issue of preservation.

    The current situation of Ye Zan is not uncommon in archaeological activities. If an ancient tomb or relic is found and opened rashly, it may not have a devastating impact on some artifacts such as gold and silver. But those documents and materials, such as paper, wood and bamboo, and even animal bones and tortoises, may have been turned into ash, but they still keep their original appearance without external force. Let alone touch, they will be completely destroyed if there is a little air flow.

    Therefore, there is such a technology, which uses an intelligent nano material to replace the decayed fiber by penetrating the interior of the material, so as to keep the material in its original shape.

    The things in this study may not have turned into ash, otherwise the air leaking doors and windows would not exist for a long time. However, judging from the situation of the main hall outside, it must be quite rotten. Maybe the pages can''t be turned at all. It''s time to use this method.

    Ye Zan first pasted the large air leakage of the house with a film, such as the window without window paper, making the house a basically closed space, leaving only a small hole with a large bottle mouth. Then, he took out a suitcase sized machine from the different dimensional space, and connected an aluminum can with a fist size to the machine. There is a pipe at the other end of the machine. Yezan connects the hose to the reserved small hole, and then starts the machine.

    With the opening of the machine, you can see through the film sealing the window that a cloud of fog began to disperse slowly in the room. Before long, the whole room could not see anything and was completely filled with the fog. Ye Zan glanced at the data displayed by the machine and determined the density of fog in the house. Then he turned off the machine and waited quietly outside the door.

    However, ye Zan didn''t wait long. After the machine was turned off, the fog in the house began to fade gradually. After waiting for less than a quarter of an hour, the fog in the house completely disappeared, and it seemed that there was no change from before. But this time, ye Zan was not so careful. He directly reached out and opened the door, and there was no change in the house.

    Ye Zan comes to a desk and casually picks up a book on the desk. The book that should have broken when touched appears quite firm at this time. After all, this technology is not a retrogression of time. While the smart nano material solidifies the paper, it also gives the paper a strong sense of plastic.

    Of course, this change will not affect reading.

    Ye Zan turned two pages. The handwriting on the book is a relatively old font. Compared with the intelligent brain database, it is at least more than 5000 years old. From this point of view, unless the owner of the secret place deliberately uses ancient characters, it can be inferred that the history of the secret place should be more than 5000 years.

    Ye Zan doesn''t intend to use the scientific dating method to determine this result. After all, the world is still very different from the scientific and technological world. This world is a world with the special energy of Reiki. 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 doesn''t really come to archaeology, so whether it''s 5000 years or 6000 years, finding something useful to himself is the main topic. For this purpose, ye Zan may be more like a grave robber, although this is not a tomb.

    Ye Zan took this book and put it directly on the desk. Perhaps it should be said that it is a note, and nearly half of it is blank behind it. The cover of the note is made of animal skin. It''s not surprising that nothing is written on the cover. Who will give his note a name and sign his name.

    The contents of the notes are indeed related to mechanism technology, but more importantly, some experimental results are recorded. Even, some of the terms used in it seem a little confused in the eyes of Ye Zan, who has not been in contact with mechanism technology.

    Obviously, if the master of the secret place wrote down his research on mechanism technology in his notes, this should be the notes in Ye Zan''s hand at the later stage of the research. Since there is a later stage, there should be a earlier stage. Ye Zan soon found several identical notes on the bookshelf on one side of the room.

    In the first note, ye Zan finally found the identity of the Lord of the secret realm. The leader of the secret land calls himself Baiji Taoist, but this name is very strange to Ye Zan. Although he has read a lot of information about various sects, he only knows that there is a sect called Qianji sect. As for the relationship between the two, at least now he can''t know.

    The notes of Taoist Baiji, involving the mechanism art, are almost from scratch, just like a beginner gradually becoming a master. This is very beneficial for ye Zan. Just looking at these notes, you can learn mechanism skills from shallow to deep without teachers'' instruction.

    However, this also makes Ye Zan a little strange. It''s not like studying only intelligent mechanism puppets, but more like studying mechanism technology, or creating mechanism technology.

    Thinking of the previous speculation that this secret place may have a history of 5000 or 6000 years, ye Zan suddenly thought of a question. In this world, mechanism art is not an ancient inheritance. In fact, in the era of Xuanyuan Taoism ten thousand years ago, there is basically no complete inheritance of mechanism art.

    In other words, even if he was not the creator of the inheritance of the current mechanism technique, at least he should have been one of the participants in the creation in that year.

    However, in the same sentence, ye Zan is not here for archaeology. Regardless of the identity of Taoist Baiji, getting these notes is a great harvest. From the notes, ye Zan also found the content related to intelligence. After seeing it, he was really shocked. The intelligence of those mechanism puppets was actually related to the soul.

    No wonder various forms of mechanism puppets have corresponding manifestations in line with the form. For example, the tiger shape behaves like a tiger and the wolf shape behaves like a wolf because they contain the soul of a tiger or a wolf. The human shaped mechanism puppets, including four bronze terracotta soldiers, are undoubtedly used as human souls.

    Of course, from the notes, in order to ensure the autonomy of mechanism puppets and have enough control, both animal souls and human souls have been processed. There are three souls in this world. After people die, the sky soul returns to heaven, the earth soul returns to earth, and the human soul lingers in the burial place. The baiji Taoist captured the human soul and refined it into a mechanism puppet.

    Even if ye Zan comes from the world of science and technology, he feels a little evil. In this world, playing with people''s souls can be said to be close to the devil''s way. At least the right way is not allowed to do such things on the surface.