It may be because the oxygen in the ground has been completely depleted, or it may be that the fire has been extinguished for too long, and now there is no spark to support it on its own.

When the oxygen in the ground was enough to breathe normally, we slipped into the secret door with our front and back feet.

The first thing everyone did when they came in was to look through the ashes on the ground inch by inch, trying to find some useful clues.

The flames near the secret door were the last to be extinguished, and the ashes here were the most detailed, and the degree of incineration of all the items was also the highest, and nothing useful was found after a long day.

In fact, the ash powder attached to the top layer has been blown away by the wind just now, and all we are looking for are some large particles pressed on the ground.

As we went deeper and deeper, fine ash appeared on the ground again, some of the ash was originally stagnant here, and some of it was blown by the wind brought by Lao Zuo and Su Hansheng.

Most of them are the remains of metal or glass, but occasionally light-colored confetti can be seen.

After all, Su Hansheng was old, and he was always lying on his stomach looking on the ground, his waist might be a little unbearable, so he stood up and slapped the light forward, probably because he was afraid that Chen Daochang would ridicule him, so he took the initiative to speak: "This place is also like a research institute." ”

His tone was visibly weak, but he was right.

Most of the ashes we rummaged through were plant ashes, indicating that most of the burned items were paper objects.

This is a desert, and if you can't find electricity, it's difficult to make a large number of electronic devices work normally, so you can only use the most primitive way to conduct scientific research in such a thing, and all the research results must be written on paper, and the little electricity they can get has only one function, that is, to provide some light when researchers make records.

No one knows what utility is studying here, and judging by the location of the base, his research project is 100% related to the Sun Tomb.

As we walked on, the space grew spacious, and we found more and more complete scraps of paper under the ashes, most of which were written with mathematical formulas and chemical equations, and I could only understand a small part of them, but most of them needed to be interpreted by Master Chengyun.

My education is in the industry, that is, I am literally illiterate.

My knowledge is in the industry, and I am also illiterate.

Not to mention, let's just say that a few people I know, Lao Zuo can tell you the entire history of China, whether it is the content recorded in the official history or the content not recorded in the official history, from beginning to end, in detail, to what extent, but all the people who are named in history, he can report the other party's birth date to you.

Qingyazi is fluent in several languages, and is also a doctor of engineering and mechanics. Master Chengyun is a mathematician and chemist who has been delayed by his practice, Chen Daochang also has deep academic attainments in theoretical physics, and even people like Su Hansheng are especially a cryptographer.

Doesn't this kind of thing sound particularly strange at first glance, how can a group of people who engage in magic engage in academics, isn't this not doing their job?

Is it strange, I don't think it's strange anyway, I only thought it was strange when I heard that the second master was an atheist, but after walking in the industry for so long, the more I saw and experienced, the more I could understand the second master's state of mind.

Don't say it, the more you talk about it, the more sad it becomes, in a word, people like them who have grown up in the industry since childhood, their academic abilities are first-class, and I am almost twenty years old before I became a monk halfway, and I can't compare with them.

Due to the incomplete information on the scrap paper, Master Chengyun only saw that practical people seemed to want to concoct some kind of special potion, and they were like a certain kind of magnetic powder in the potion, and according to the different proportions of the magnetic powder, the strength of a certain medicinal effect would also show a very irregular mathematical curve.

Originally, we thought that we would find more similar scraps of paper in the rest of the trip, but it was disappointing that there were fewer and fewer pieces of paper with numbers and equations written on them, and more pieces of paper scattered with something similar to daily life.

Master Chengyun analyzed that this may be an observation diary left by a practical person, and there have been some experimental subjects who have been observed day and night, which may have been used to test medicines.

I couldn't help but ask the great monk, "What kind of medicine?" ”

Master Chengyun just shook his head and did not respond verbally.

It wasn't until we collected some scraps of paper with words that Master Chengyun slowly pieced together the contents of the pieces of paper and came to an astonishing conclusion: "It seems that Practical intends to cultivate a true immortal pill here." ”

As he spoke, Master Chengyun turned the piece of paper in his hand to me and asked me to look at the date written on it: October 13, 2002.

At that time, I hadn't returned to my home.

It seems that even during the time he stayed in the house, the practicality never stopped, and he never gave up his dream of immortality from beginning to end.

"Look at this!" Su Hansheng's voice brought me back to reality, and I looked towards where he was standing, and saw that he had turned over the thick ash with a steel pipe that he had picked up out of nowhere.

Beneath the ashes was a charred corpse.

The corpse had a chain around its ankle, the tail of which was firmly embedded in the ground, and he seemed to have struggled in the flames, but the chain extinguished all hope of life, and even when he died, the corpse still raised his head and looked at the exit of the unreachable crypt, and one of his hands was firmly pulled on the chain, as if he wanted to use all the strength of his life to tear the chain off.

That's the last thing I want to see.

I know that Practical has lost his mind, but if I don't see this, at least I can still have a trace of luck in my heart, at least I can still deceive myself, maybe, Practical humanity has not been completely extinguished, maybe we can save him.

This is a kind of idea of death, in fact, when I saw the thirteen dead bodies in Shijia Old Village, I should no longer have hope for practicality.

But for me, the thirteen complete corpses were far less shocking than the charred corpse in front of me.

There was more than one similar corpse, and as we continued to dig deeper, we found seven more identical corpses.

Master Chengyun said that these people who were burned to death should be experimental subjects used to test the efficacy of the medicine.

I suppressed the anger in my heart and didn't explode in front of everyone.

Near the end of the crypt, we found two things near the corner.

A half-burned cowhide note, and a vent blocked by broken glass and various ashes.

Standing in this position, you can hear the turbulent sound of underground water veins, and behind the vents is a very deep underground cavern, which can be a desert, and only such a deep hole can have water.

The dark tide brings moisture and oxygen, and it can be said that this vent is the source of oxygen for the entire crypt, and it is precisely because the ground fire burned the glassware in the vicinity that it caused the broken glass mixed with ash to completely block it.

There was a very large metal shelf near the vent, which had been burned black by this time, and in addition to glassware, there were many messy chores on the shelf, and the old notes that had been burned out were mixed in with the chores.

And the content recorded in the book really made everyone excited.

The things recorded above are actually the methods of soul restoration, although only half of the content is left because it has been burned, and from this half of the description alone, some clues of the soul restoration technique can still be seen.

We already knew before that to perform the Soul Exchange Technique, we first needed the source of the Yin Qi of the Inner World as an introduction.

From what is recorded in the notes, it can be seen that the source of yin qi is only one of the necessary conditions, and the other necessary condition is the fine life grid of the spell subject, and a special magic circle is arranged according to its life grid.

Since you need to refine the lifeline, you need to refine the eight characters of the spell object.

The head of Xia, who is in the same vein as Tunmeng, once said that my eight characters and life numbers cannot be deduced finely, and the reason is unknown. But the practicality doesn't need to be carefully pushed, and I got my eight characters.

In the past, I trusted him too much, and I didn't have any defenses in front of him, and I told him all the details of the eight characters, the place of birth, and even the experiences from childhood to adulthood.

Maybe I can't figure out my fate, but as long as I have my eight characters and all my life experiences from childhood to adulthood, it is not difficult to come up with my life number.

My hunch is right, now there is only one last step in the practical distance to immortality.

Until now, he had not found the source of the Yin Qi.

I was already thinking about these things, Chen Daochang was still looking through the old burnt notebook repeatedly, Su Hansheng was also standing beside him, he turned page by page, and Su Hansheng also followed page by page.

After a long time, Su Han suddenly came out with a sentence: "Looking at the format and writing, it looks like a book of reading notes." ”

Chen Daochang was stunned for a moment, and then refuted very unconvinced: "Isn't this nonsense!" ”

Su Hansheng seemed to have lost interest in arguing with him, and just turned his head to me and Lao Zuo and said, "The soul exchange technique on this should be deciphered from another person's handwriting. ”

I instantly understood what Su Hansheng meant.

That is to say, the manuscript of the Soul Restoration Technique may never have fallen into the hands of the Utility, but someone once studied this set of spells and compiled a detailed research notebook, and the Utility obtained the person's notes, and through the contents of the notes, the process of the Soul Restoration Technique was completely restored.

The reason why I was able to instantly understand the meaning of Su Hansheng's words was also because the style of this half of the notebook left by Shi Shi was very similar to that of reading notes, and there were many of his own conjectures and inferences.

Chen Daochang flipped through a few more pages in a row, and slowly frowned: "Why is it that on these pages, there are several 'Xu' words written on each page." ”