It's a blue-covered booklet, and it looks very old, probably some years old.

Xiao Yu had an instinct in his heart that this book was very unusual.

Cultivators with special functions are similar, the vast majority of people with special functions are innate, while cultivators pay attention to spiritual roots, ordinary people without spiritual roots cannot cultivate the truth, and the cultivation of physical cultivators also requires high qualifications, and not anyone can cultivate.

Take the 'Heaven and Earth Decision' as an analogy, although Da Niu's grandfather successfully cultivated the 'Heaven and Earth Decision', but Da Niu and Er Ya couldn't learn it anyway, this is the reason for the qualifications.

And through Xiao Yu's observation, the little old man is obviously an ordinary person who can no longer be ordinary, such a person can learn special functions by cultivating, it is definitely an outlier, since ordinary people will have special functions through cultivating this book, what will happen to cultivators with spiritual roots who cultivate this book?

Xiao Yu didn't dare to think about it anymore.

I flipped through the booklet, and the words on the pages were all ancient seals the size of a fly's head, which looked like someone should have copied them in a hurry, and the more I went to the back, the more sloppy the handwriting became, probably because of too much time, and in some places it was even blurred.

After Xiao Yu got the 'Black Magic Gong' secret book from Gongsun Gu, he was very interested in the strange hieroglyphs on it, and in his spare time, he studied the evolution history of ancient Chinese characters on the Internet, and this ancient seal script naturally became an important research target for him.

After some research, with his unforgettable skills, although this ancient seal character is not proficient, but it is not unfamiliar, and even guessed with a blind, the content on the first page of the 'Xuantian Lu' was understood.

Xiao Yu couldn't help but admire the little old man, a person like him who didn't have much culture and didn't know the ancient seal script wanted to understand the content of this book, it was really difficult to get to the sky.

One can imagine how difficult it was for the little old man to find someone to translate the ancient seal script word by word, and then figure out the meaning of the ancient text one by one.

The author of this book believes that the power of divine consciousness can make him feel the divine will of the immortals, turn evil into good fortune, and through continuous cultivation of divine consciousness, he will eventually be able to communicate with the fairy bridge and ascend to immortality.

Judging from the general outline, 'Xuantianlu' is divided into ten realms.

The first layer is the simplest, after successful cultivation, you can control some small objects and temporarily disturb people's consciousness with your mind, which is also something that the little old man will know, and cultivating to the tenth layer is the highest level of divine consciousness cultivation, which can communicate with the fairy bridge and soar in the day.

Originally, he believed that the ancients worshipped the immortal Tao because of the backwardness of science and technology and culture, and longed to be able to soar through the cultivation of the body and divine consciousness, and become immortals, which is involved in many ancient books, and now that science has developed, it is proved that these ideas are often in the mirror.

However, since he met the White Eyebrow Master, his mind has changed, according to the White Eyebrow Master, the 'Ethereal Heaven' is a world parallel to the 'Human World', and since there is a 'Ethereal Heaven' in this world, then maybe there will also be the so-called 'Immortal Realm'.

"Perhaps, there is another possibility, maybe the 'fairy world' in the eyes of the ancients is the 'ethereal sky' in the mouth of the white eyebrows!" Such a thought suddenly flashed through Xiao Yu's mind.

Right! It must be so!

It is no wonder that there is no record of people becoming immortals in modern books, but it is often mentioned in ancient books, and that is because the spatial passage of the 'Ethereal Heaven' and the human world collapsed for some reason five hundred years ago!

If you think about it carefully, the immortals in the mouths of those ancients are very likely to be those cultivators who come and go between the two interfaces!

Judging from the supernatural powers that the Heavenly Demon Lord incarnated into a black cloud and the white-eyed master could kill people with his eyes, some cultivators with great skills fully possessed supernatural powers similar to the legendary immortals, and in the eyes of mortals, they were immortals who could call the wind and rain.

The more Xiao Yu thought about it, the more excited he became, as if an eternal mystery was about to be solved in front of him.

After staying for a while, I couldn't help but laugh dumbly, even if I knew that the 'Ethereal Sky' was the legendary fairy world, what was the use?

According to the Venerable Master Bai Mei, the passage between the 'Ethereal Heaven' and the Human Realm has been destroyed, and only cultivators who have reached the stage of transformation of their divine powers can return to the 'Ethereal Heaven' with the strength of their physical bodies.

However, there is a lack of spiritual stones in the human world, and the vitality of heaven and earth is less than one-thousandth of that of the 'ethereal sky', and if you want to advance to the gods, the hope is too slim, and most cultivators will definitely run out of longevity in the human world and become a pile of dry bones.

With a long sigh, putting aside the messy thoughts, Xiao Yu returned his attention to the 'Xuantian Record'.

He was still very interested in the cultivation of spiritual power.

Xiao Yu looked at the cultivation method of the first layer of the 'Xuantian Lu' and found that it was not difficult.

Thinking that it was the time when the hotel was busy, Zhu Xiaohong should not come up, so she would simply cultivate this first layer by herself to see what the magic of this 'Xuantian Lu' was!

After reading it carefully, according to the mental method taught in the book, Xiao Yu turned his heart to the sky, sat cross-legged on the bed, and used his mental power to sense a ballpoint pen on the desk.

An hour passed.

The ballpoint pen did not change in the slightest, Xiao Yu was not discouraged, and tried again and again, sometimes he felt that the ballpoint pen was very close to him, and sometimes it was far away.

When cultivating spiritual power, the internal force and the Heaven and Earth Yuan Qi can't help at all, and can only rely on Xiao Yu himself to slowly comprehend.

Another hour passed.

Faintly, Xiao Yu could already feel the filaments of spiritual power emanating from his brain, but these spiritual powers were too weak, and the ballpoint pen was too heavy for these filaments of spiritual power, like ants shaking elephants, and they couldn't move a single inch at all.

The third hour of Xiao Yu's cultivation.

The originally invisible spiritual power gradually became clear and tangible in Xiao Yu's mind, Xiao Yu's heart moved, and he tried to gather this spiritual filament, weave it into a thin rope, and probed this rope towards the ballpoint pen.

This time it was obviously much better than before, Xiao Yu could even clearly feel the material and weight of the ballpoint pen by the contact between the spiritual power and the ballpoint pen, but unfortunately the power of this spiritual power string was still far behind, not enough to move the ballpoint pen.

Just when Xiao Yu wanted to gather more spiritual filaments to thicken this spiritual power string, from the nameless jade ring in his neck, the 'King Kong Demon Bracelet' on his left wrist, and the 'Mandarin Duck Jade Pendant' on his body, each sent a spiritual power to his brain, wrapped on the spiritual power rope, making the thickness of this rope instantly double.

Under the scroll of spiritual filament, the ballpoint pen on the desk suddenly rolled, 'clicked', and fell to the ground.

"It worked!" Xiao Yu opened his eyes happily, and he finally moved the ballpoint pen with his mental power!

Suddenly, Xiao Yu felt that between his eyebrows, in the depths behind Yintang, it was as if something had suddenly exploded, and he had a splitting headache, and this pain was a hundred times stronger than cutting his skin with a knife.

"This ...... Could this be ......?"

Xiao Yu tried his best to endure it, and the record on the 'Xuantian Record' flashed in his mind, and the situation faced by his brain was very similar to the characteristics of the 'Exploring the Sea of Knowledge' recorded in the book.

Knowing the sea is a place to store and cultivate divine consciousness, and successfully developing the sea of knowledge can make a qualitative leap in one's spiritual power attributes, which is also an important sign of the first level of cultivation of the 'Xuantian Lu'.

Ten minutes......

Twenty minutes......

Thirty minutes......

Time passed minute by minute, but the process of developing the sea of knowledge showed no sign of ending, but Xiao Yu seemed to have adapted to the pain of brain swelling, and there was still some joy in his heart.

There are some simple descriptions of the development of the sea of knowledge on the Xuantian record, and a person can only get one opportunity to open up the sea of knowledge in his life, and once the sea of knowledge is completed, except for some special methods, it is impossible to expand the space of the sea of knowledge again.

Therefore, the longer this time lasts, the greater the capacity of the sea of consciousness that has been opened up, the wider the space for development in the future, and the speed of cultivating divine consciousness will be much faster than that of ordinary people.

According to the records in the book, the average person's sea knowledge and development time is about ten breaths, and according to modern time, it is roughly equivalent to ten seconds, and Xiaoyu used more than one hundred and ten seconds?

It took a full hour for the headache to subside.

Xiao Yu curiously looked at the sea of knowledge in his brain through the method taught by 'Xuantianlu', and found that a huge black space suddenly appeared in front of him, and this black space was like the universe, boundless.

In the middle of this empty space, there is a small, faint, vague golden vortex, about the size of an egg, slowly spinning in a clockwise direction.

As he was looking, in the black space in front of him, more than a dozen golden thin lines suddenly appeared, and as soon as these thin lines appeared, they were as if they had encountered a magnet, and they were immediately attracted by the golden vortex and instantly merged into the golden vortex.

With the addition of these thin lines, the golden vortex no longer looked as blurred as before, as if it was much solider.

Only then did Xiao Yu notice that this golden vortex was all composed of wisps of golden divine consciousness, which should have been randomly generated in this black space and absorbed by the golden vortex.

"This golden vortex should be the 'soul vortex' introduced above in Xuantianlu!"

The soul vortex is the source of creating and integrating spiritual power, as long as this soul vortex keeps rotating in the sea of consciousness, the random spiritual power in the sea of consciousness will be attracted by it and converge together, otherwise the scattered spiritual power will not play a role.

Once the soul vortex dissipates, then the entire sea of knowledge is in danger of collapsing, and for the master of the sea of knowledge, this is enough to deal a fatal blow.

"Hey, what's that?"

Xiao Yu saw through the gap of those sparse golden threads, and vaguely saw that there seemed to be something in the center of the soul vortex, this surprise was not trivial, it was recorded on the 'Xuantian Lu', in addition to the divine sense, there could be no other thing in the sea of consciousness, and what was going on with this thing?

This thing was completely wrapped in a golden soul vortex, and since its color was almost the same as the background of the black space, it was almost ignored by Xiao Yu.

Looking closely again, Xiao Yu was surprised to find that this thing turned out to be a drop of black-red liquid.

This drop of black-red liquid has a strange metallic sheen all over its body, and it is strangely suspended in the middle of the soul vortex, motionless.

"Hint, the cultivation of the first layer of the 'Xuantian Lu' is successful, the level of sea exploration - the top, the reward, the spiritual power cultivation speed increases by 300%!"

"Hint, your mind-reading skill has been upgraded, the current level is - advanced, additional skill: soul searching."