As soon as Xiu Yu entered the Library, his heart couldn't help but beat, and after he took two deep breaths, his eyes were slightly condensed, and he observed the Library.

What catches your eye is rows of old bookshelves, and the inside of the bookhouse is not at all as splendid as it looks from the outside of the tower, but exudes a quaint, dusty atmosphere.

It must have been months since anyone set foot here, and spider webs were formed in the library.

didn't have time to think about it, Xiu Yu immediately searched for it on the bookshelf. There were only two hours to go, and the two guards outside the door would wake up after two hours, and he had to find what he was looking for in that time.

He quickly skimmed over the bookshelf and quickly picked up a book from the shelf—"History of Nangong Ye".

No.

Xiu Yu didn't even look at it, put it down directly, and after quickly scanning the bookshelf, he picked up a thicker book - "Records of a Hundred Years of Family".

Not yet.

Xiu Yu was not in a hurry, and after looking at the books on this shelf, he found that there were some historical books about Nangong City recorded here, so he decisively came to the next bookshelf.

It was a relatively empty bookshelf, with only a few broken books, and it looked a little dusty.

He picked up a copy casually, the cover was a little old, as if no one had read it for years, and the dust was very thick.

He turned the first page and couldn't help but be overjoyed when he saw the eye-catching words.

"On the Record of Practice"!

It was a book about cultivation, only two short pages, and he quickly read it.

"There are countless cultivation factions in the world, since I have cultivated, I have tried to pursue the strongest cultivation path in the world, I have seen too many cultivators, there is no shortage of people competing with powerful factions, immortal cultivation, meditation and Buddha, ghoul cultivation, alchemy refining tools...... Whether it is the ability of cultivators, Buddhas, or ghosts, they will not be able to follow my wishes, until the last years of my life, and I will be lucky enough to realize the mystery of the strongest qi refiner......"

Xiu Yu put down the book and took a deep breath, this is the words written by an undefeated old man in his remaining years, telling the story of the undefeated old man's pursuit of the world's qi refiners, and his desire to find cultivators who can defeat the qi refiners in other cultivation factions, until his old age, invincible opponents in the world, and legendary people who have passed away in seclusion.

However, judging from the words of the undefeated old man, when the undefeated old man was in his last years, he was able to realize it, and he thought that he left a lot of regrets.

Qi refiners are the most powerful cultivators in the world, and unlike other cultivation factions, Qi refiners pay attention to the fit of qi and body, body and people, and people and heaven, which is a method of cultivation from the inside out.

Putting down the "Treatise on Practice", Xiuyu picked up a book again, and Xiuyu continued to read:

"The human body is the most infinite treasure in the world, and refining qi is the key to unlocking this treasure. ”

This is a book of "Detailed Explanation of Qi Refining", when Xiu Yu saw this sentence, he couldn't help but gather his spirit, because this sentence was something he had heard countless times.

Qi refiners, according to legend, the ancient qi refiners can incarnate the heavens and the earth, travel the universe, move mountains and reclaim the sea, and make the sun, moon and stars rotate, and the heavens and stars move. Qi refiners refine their bodies with qi, innate nourish and breathe in the human body's spiritual breath, sense the inner qi, derive the innate aura, feed back the body, nourish the soul, and finally reach the high and profound realm of qi and body, body and man, and man and heaven.

Qi refining is the most difficult cultivation path in the world, and its most basic Qi refining realm is extremely difficult, and the ascension of each realm is even more difficult than other cultivation paths.

The root of Qi refining is Qi, the innate Qi nourished by the human body. At the beginning of cultivation, Qi Refiners cannot breathe in the aura of heaven and earth, the essence of heaven and earth, and can only rely on the innate first wisp of aura derived from their own inner qi to slowly grow strongly.

This is the most fundamental gap, and it is essentially different from other cultivators.

Seeing this, Xiu Yu sighed with emotion. Looking at these written records, he finally found Weimo's comfort.

Qi refining is still the most sought-after cultivation method.

Continue to study, it is about the cultivation realm of Qi Refiners.

The first realm of Qi Refining's cultivation is called the Qi Refining Realm, and this explains in detail about the six realms.

The external strength is like silk, the internal strength is Hong, the refining qi is vertical and horizontal, the strength is transformed into the spirit, the spiritual energy is transformed into the god, and the spirit and spirit are united.

The external strength is like silk, that is, the first order of refining qi, which successfully senses the inner qi of the human body's secrets, thereby attracting the inner qi, which can make the strength findable, and the qi is as big as a tiger.

The internal strength is like Hong, the second order of refining qi, the dark energy from the inside out, and the internal force of the martial arts cultivator, can not be seen, can not touch, but can intuitively feel its existence, there is the ability of gravel, can hurt people invisibly.

Qi refining vertically and horizontally, also known as sword qi vertically and horizontally, refining qi is the third order, the qi is searchable, the spirit is breathless, ten meters away can show the edge, if attached to the sword, there is a sword qi potential.

After refining the qi and transforming the spirit, in the real sense, he has become a qi refiner, and after the inner qi is cultivated, it has successfully evolved into the first wisp of innate spiritual energy of the human body, and then the qi refiner will continue to derive spiritual power. After reaching this realm, the Qi Refiner can manifest his spiritual power.

The rest is still the spirit of the gods, the spirit and the gods are one of the two realms, and Xiu Yu read them in one go.

But after reading it, his brows were tightly twisted.

Why is this book only recording the sixth order of qi refining, is it because this book is not completely recorded?

Or is there something else?

Xiu Yu pondered for a while, then put down this "Detailed Explanation of Qi Refining", he calculated the time, and felt that more than a quarter of an hour had passed, and before he could think about it, he picked up the last book on the shelf.

"The Origin of Qi Refining"!

It is an old book, seemingly hundreds of years old, with a cover made of sheepskin, and the smell of antiquity and decay mixed with dust blows in the face.

How did the road to refining qi come about?

It is said that in the ancient period, the Qi Refiner already existed, but at that time, people were too small compared to those powerful beings in the heaven and earth, so the Qi Refiner had not yet spread, but there is no doubt that the Qi Refiner was the oldest and most primitive cultivation path.

Later, in the primeval period, the human race slowly developed and flourished, and the road of refining qi became more and more perfect, and human beings could gradually compete with some primeval creatures, until after a long time, the human race began to stand tall in the world without falling, and after that, the human race was at its peak, and various cultivation paths were opened.

However, in an extremely distant era, it is unknown how Qi Refiners came into being. Some people speculate that the Qi Refiner is the ultimate crystallization of the ancient human race and the original path for human beings to multiply; some people say that it was created by a mysterious existence, the purpose of which is to enable the ancient human race to survive in the vast heaven and earth; some people say that it was the powerful creatures who created the human race, and the method of refining qi is the foundation that gave the human race the first root for its growth...... There are different opinions, all kinds of fabrications, but there is no one unified and convincing statement.

Xiu Yu put the badly damaged book back into the distance, and couldn't help but sigh again.

Qi refiners have existed since ancient times, and in his time, there were countless people who wanted to pursue the secret of qi refining, but they could never see any truth, even if the source of qi refining could not be determined, but this strongest cultivation path, no matter what period it was, was the most eager for people to cultivate.

Originally, I was going to look for some books on Qi refining cultivation, but in this first layer, there were not many books on it, and even fewer records about Qi refining and the like.

After all the bookshelves had been almost gone, Xiu Yu counted the time, and felt that the guard at the door was about to wake up, he paced out of the door of the library, put the key back on the guard, and quietly blended into the alley.

Just a few breaths after Xiu Yu left, the patrol team came over, accompanied by a cat's meow, and the two sleeping guards were startled, and after opening their eyes, the two looked at each other suspiciously.