A faint fragrance of books passed into Chen Xuan, who stepped into the fourth floor, but he was greeted by a faint fragrance of books, and a smell of sandalwood, the scene on the fourth floor was completely beyond Chen Xuan's imagination, not the rows of bookshelves he thought, on which all kinds of books were placed, but these books were completely embedded in the wall.

Hundreds of books were completely embedded in the wall, and they couldn't be taken down at all, Chen Xuan really couldn't imagine how this could be, and some of them couldn't see the books at all, only a faint phantom, looming.

"Aren't these books for people to read?" Chen Xuan muttered to himself.

"No, it's for you!" a faint voice suddenly came from above.

Chen Xuan was stunned by the sudden voice, and then asked, "Please also ask the seniors for guidance!"

"It's very simple, enter your soul power, enter the book on the wall, and you can get the knowledge you want, but this is also a very soul-consuming thing, how much knowledge you can get depends on how long your soul power can withstand it!"

Chen Xuan, who was standing in place, quickly understood what it meant, that is, to enter soul power into these books and absorb knowledge from them, this should also be a very soul-consuming thing, otherwise he would not have said a word to remind him just now, and a divine sense was differentiated from Chen Xuan's soul sea.

The soul power condensed into a rope shape, and floated towards a very old book on the wall, at this time Chen Xuan didn't know that the book here was what he needed, so he could only try it one by one, his divine sense was like Chen Xuan's eyes, and he was instantly absorbed by this ancient book, and his soul power didn't listen to his own call at all, and he felt that his soul power was swallowed.

Suddenly, a virtual picture appeared in Chen Xuan's soul sea, this is the picture in the ancient books, slowly presented in Chen Xuan's soul sea, this is actually a book of fighting experience, that is, to teach how to be suitable for fighting, and what measures should be taken when the strength is not as good as the other party.

Chen Xuan's soul power was disappearing rapidly, the picture in the soul sea began to blur slowly, Chen Xuan felt that the book was absorbing his soul power, Chen Xuan did not hesitate, and instantly cut off the connection with this book, and at this time, the picture in the soul sea also disappeared.

Chen Xuan, who was standing in place, felt dizzy for a while, lightheaded, shook his head, and then absorbed some energy from the soul stone, only then did he feel clearer and make up for the lost soul power just now.

"The speed at which these books absorb soul power is too terrifying, in the time of two breaths, the soul power was almost taken away, and I only watched about half of it, and even the important part I haven't seen yet, it seems that the person who comes in can only choose once, and it also depends on the chance, once you choose to be useless to yourself, wouldn't it be a trip in vain, not everyone is like yourself, there are soul stones to recover soul power!"

The consumption of soul power is not a spirit stone, the pill can be recovered, unlike the loss of yuan power, as long as there is a large amount of pill, it can be recovered instantly, but the soul power is not good, it can only be cultivated slowly, this is also what Chen Xuan guessed, one person can only choose one book at a time, his soul power is strong enough, and it is not enough for the erosion of a book.

After the soul power recovered, Chen Xuan chose a book here, and the soul power condensed into a rope and drilled into the book, the same picture appeared again, it was a book about the technique of refining weapons, and when he was halfway through watching, Chen Xuan took the initiative to cut off the connection and used the soul stone to repair his soul sea again.

One by one, the books were filtered out by Chen Xuan, and Chen Xuan actually felt that his soul power had been greatly improved here, and even the soul splitting da method he had obtained could begin to separate the two soul powers, condensing for a long time.

After more than a dozen books passed, Chen Xuan's face became ugly, although there was an unlimited repair of the soul stone, but it was also a huge test for Chen Xuan, his face was pale, his eyes were blank, Chen Xuan looked at the dozens of books on the wall, his legs shook, and he took a step back.

"I can only take risks, my own time is already insufficient, ordinary disciples who arrive here can only choose one book, but I have been delayed for such a long time, I must speed up!" Chen Xuan made another decision.

"Whew!"

Two soul powers came out of Chen Xuan's soul sea at the same time, fluttering towards two of the few dozen books in front of him, Chen Xuan risked the danger to cast the soul splitting method, and the two soul powers floated out of his soul sea.

Countless pictures were like a movie, constantly flipping through Chen Xuan's soul sea, Chen Xuan's mind was completely silent, all the irrelevant filters, and there was still no answer he wanted, Chen Xuan decisively cut off the connection.

With a breath of pranayama, Chen Xuan once again condensed into two streams of soul power and passed out, and two more books were injected into Chen Xuan's soul power, and the picture appeared again in Chen Xuan's soul sea, and at this moment, the corners of Chen Xuan's mouth suddenly crossed an arc.

"It's you, I've finally found you!"

Chen Xuan looked at the pages of the book that he kept flipping through in the sea of souls, and finally saw what he wanted.

"The Legend of the Beast!"

There were countless kinds of small Kun beasts recorded on it, as many as stars, Chen Xuan gave up another one, but looked at this one intently, the energy of the soul stone was flowing continuously towards his soul sea, in order to meet Chen Xuan's needs.

Countless kinds of insects that Chen Xuan had never seen appeared in front of him, but there were no black spots the size of needles that Chen Xuan had seen on the Dantang Peak, and they also absorbed the essence of the elixir, and the pages slowly disappeared in front of Chen Xuan.

Chen Xuan carefully distinguished, for fear of missing a detail, and all of them were compared, which requires strong soul power support, not only needs soul power to maintain the operation of this ancient book, but also draws out soul power to distinguish whether there is something in it that he needs.

Chen Xuan suddenly did not stand again, his eyes were closed, and he sat cross-legged on the ground, this book was very thick, there were thousands of pages, each page represented a type of creature, all Chen Xuan needed to do was to get rid of these thousand pages, find out the culprit, and seek a cure.

Sweat flowed from his forehead first, and the clothes behind him were also wet, although this is not a battle, but it is like a battle, this is a game of soul power, the consumption of soul power is endless, Chen Xuan finally read more than half of this book, and a small half has not been finished, and he has also absorbed a lot of knowledge.

The pages of the book were flipped through quickly, and Chen Xuan's little golden man condensed by his soul stood in his soul sea, his eyes glowing, and he looked intently at the pages of the past that were reading from under his nose.

Suddenly, something in the shape of a cocoon chrysalis attracted Chen Xuan, not this cocoon chrysalis, but there were many black spots next to the cocoon that were exactly the same as this one Chen Xuan had seen, and countless small black spots crawled out of this cocoon chrysalis.

"Spirit Eater Gu!"

Three eye-catching big characters appeared on the top of this page, and Chen Xuan's eyes instantly saw these three words, and then there were some boys densely written below, condensing his gaze into a thin line, looking at the top of these kids.

Spirit Eating Gu, a third-level demon beast, does not have a strong attack power, but it is a nightmare for all cultivators, as long as it is stained with this kind of thing, it will be inexhaustible, unless you have the strong strength to kill him completely, otherwise he will be like a parasite, parasitic in your body, constantly absorbing the aura on your body, you cultivate for three points, and one point will be absorbed by this Spirit Eating Gu.

Chen Xuan's scalp was a little numb, why was it so difficult, he raised his gaze Chen Xuan continued to look at it, and began to write how to restrain it, this is what Chen Xuan needs.

Although the Spirit Eater Gu is very annoying, it is not impossible, as long as he finds his main chrysalis and refines it, so as to summon all these sub-chrysalis to go back, but it is difficult to find out where the main chrysalis is generally hidden, which is also a headache for many cultivators, here I pass on the experience I have gained to future generations, so that no one will ever be eroded by the [Spirit Eating Gu] again.

Chen Xuan paused for a moment, continued to look down, and then saw again how to find the main chrysalis method.

As long as there is a place where the pupa appears, it must be accompanied by the main pupae, but the main use is cunning, and generally cannot be found at all, the following is the experience I have gained after many experiments, and I will teach it to future generations, the best way is the aura, because the food of the [Soul Gu] is the aura, as long as a large number of auras are arranged in one place, and the aura is not dissipated, it is possible to lure the main pupa out, and it will be captured.

There is also a way to follow the route of the pupa to find, although this method is feasible, but I advise future generations not to try, once you are not careful, your body will also be eroded by this [Spirit Eating Gu], because once you encounter a large number of [Spirit Eating Gu] you yourself can't scruple it, so the best way is to catch the main chrysalis, this is the best plan.

Chen Xuan finished reading all the kids, immediately cut off the connection with the book, and then sat on the ground, still silent in the world just now, his mind was full of the picture just now.

After two breaths, Chen Xuan, who was sitting on the ground, suddenly made a catapult, "It's not good, the time is almost up, mine go out immediately, I don't want to be sent out!" Chen Xuan immediately walked towards the stairs on the third floor, but this time the light curtain was not blocked, and Chen Xuan easily passed through.

Just after Chen Xuan left, a faint light appeared on the uneven wall, and then a faint phantom appeared.

"It's interesting, someone can insist on reading more than 20 books here, it seems that except for someone who read more than a dozen books in a row 10,000 years ago, no one can insist on more than three books in a row, this kid is interesting!" After speaking, this phantom turned into a book and disappeared into the wall.

If Chen Xuan was here, he would definitely be shocked, because there was no book on the wall just now, and there was only one possibility, that is, the book was hidden by itself.