Looking at the light shield in front of him, Lin Xuan's face showed a solemn expression, the higher the library of the Elixir Mountain, the higher it went, the more rare the classics it contained, and at the same time, there were many prohibitions.

And with his identity as the head of the house, he can only enter the fourth layer at present, and he doesn't know what is on it, but when he thinks about it, it must be extraordinary, for example, the raw materials and refining methods of the Tianchen Pill......

Lin Xuan is not unimpressed, but now that the time has not come, it is not appropriate to startle the snake, and there is a chance to talk about it.

Putting these thoughts behind him, Lin Xuan took out a waist card from his arms, the top priority was to find a way to restore Yue'er to its original state.

A red light flew out from the waist card, and the shield trembled, as if the two sides were separated, revealing a passage that could be walked through by one person.

Lin Xuan walked in calmly, there were about 100 square meters inside, rows of bookshelves stood there neatly, and on the bookshelves, hundreds of jade tubes were placed in different categories.

Lin Xuan saw it, but he didn't have the slightest intention of stepping forward to read it, but the corners of his mouth turned up, revealing a sneering smile.

The prohibition of this library pavilion, how can it only be the one in front of the door, these bookshelves in front of you are all traps, as long as someone goes up to look at the jade tube, the ban will be triggered, and it will be wiped out by the large array that has already been laid out.

Lin Xuan slapped on the storage bag and took out a smile, but this was not a beast soul flag, it was just an ordinary spirit weapon, and the surface of the banner was embroidered with a few small golden characters - Elixir Mountain.

Lin Xuan waved slightly, and a cloud of pink mist flew out of it, circled around the third floor of the pagoda, and then floated away like an inconspicuous corner.

The fog resides there, after stretching and contracting a few times. It burst open, and then a low bookshelf appeared in front of him, on which were placed seven or eight jade tubes.

Although there is a little less, these jade tubes are not trivial. It is all left behind by ancient monks.

These things are the real classics that the fourth layer library possesses, Lin Xuan walked over, his divine sense swept slightly, and then he took the third one in his hand.

The owner of this jade cylinder is a ghost monk in ancient times, but the place recorded in it is not his exercises, but some other secrets related to the ghost path.

Lin Xuan sank his divine sense into it.

The sun was turning westerly, and the day passed quickly.

Lin Xuan put down the jade tube in his hand, his brows furrowed slightly. Something difficult seems to have happened.

Yue'er failed to Ning Dan this time, and the damage she suffered was more serious than she imagined, and Lin Xuan didn't seem to understand what was going on. But there is only one way to restore her to her original state, which is to kill the ghost king who has been practicing for more than a thousand years, take his inner pill, and then use this thing to nourish the original god for Yue'er.

Lin Xuan sighed, walked out of the library pavilion, returned to his cave mansion, and then began to prepare for the long journey.

The so-called ghost king. Like zombies, they all belong to the netherworld, but zombies are corpses buried deep underground, absorbing the yin energy of heaven and earth, and being born through spirits.

Ghostly spawns. There are two reasons, one is that the person has a great grudge in his life, so he is unwilling to go to the Netherworld and re-enter reincarnation after death.

There is also a monk who pursues the path of immortals, but he has not reached the Yuan Infant Stage, and after the soul is destroyed, the Yuan Shen escapes and does not take it in time.

However, whether it is a mortal or a monk, the soul remains in the yang world, unless there is a special circumstance. Otherwise after some time. He will gradually lose his mind until his soul is gone.

It's hard to be an ordinary ghost. Not to mention the existence of the thousand-year-old ghost king, in terms of cultivation, they are even more difficult than the thousand-year-old corpse king.

In the past, there was a tragedy in the cultivation realm where a medium-sized sect was wiped out by the hands of the thousand-year-old ghost king.

At that time, it was a sensation and caused an uproar, and the righteous path and demons joined forces to encircle and suppress these ghosts, and even the human monks who practiced the ghost path were killed by mistake......

Of course, it was an old thing 10,000 years ago, and today's Youzhou, not to mention the ghost king, ordinary ghost pawns, it is difficult to see them in leisure.

Except for one place, the Canyon of the Shadows.

Speaking of this Yin Soul Canyon, it also involves a rather beautiful legend in the cultivation realm.

I don't know how many years ago, there was such a pair of double cultivation couples, who were very affectionate to each other, but later because of an accident, the female monk died, and her soul was captured by a ghost who happened to be cruising in this world.

The male monk is naturally in pain, but his cultivation is also really amazing, he has reached the realm of the Great Perfection of the Yuan Infant Period, after experiencing this blow, he did not decade, but turned his grief into strength, broke through the bottleneck in one fell swoop, and entered the realm of the legendary clutch period.

After entering the clutch period, he has the ability to shatter the void and fly to the spirit realm, this male cultivator named Mo Yandi did not do this, but used the power to break through the space to come to the Netherworld, and even forcibly snatched back his lover's soul.

The result was naturally a failure, after all, the supernatural powers of the monks in the clutch period were amazing, but there was a terrifying existence at the level of ghosts and immortals in the Netherworld, how could they tolerate outsiders making trouble.

Mo Yan saw his lover's soul, but there was no way to rescue her, and he failed, and Mo Yan chose to blow himself up in anger.

The terrifying power made a passage between the netherworld and the human world exploded, and countless yin fog that could only appear in the netherworld gushed out, and some ghost kings and ghost pawns also ran, although the ghosts and immortals of the netherworld quickly used their great magic powers to re-seal the entire gap, but the yin fog and the ghosts that ran away settled in the world.

The yin mist is not a thing in this world, where there is no grass, mortals and livestock will become a white bone when they enter it, even the monks are very jealous, plus the ghost king who escaped from the land, the ghost pawn is also very strong.

Gradually, all the mortals within a radius of a hundred miles migrated, and the monks would not go there, and it became the Netherworld of the Human Realm.

Fortunately, the ghosts inside were killed by the monks several times when they went out to harm people, and they also learned to be obedient, understanding that this world is not where they can do whatever they want, so the two sides formed a tacit understanding, ghosts rarely come out of it to harm people, and the monks will not attack there, and the two sides have reached a balance of constraints.

There is the Canyon of the Shadows.

In addition to the ghosts that escaped from the underworld, the ghosts that occasionally got from the mortal world also gathered there, so that they could avoid the killing of the monks, and they came to practice much faster in the mist.

Lin Xuan had read about the introduction of Yin Soul Canyon in miscellaneous books, and he didn't care about it at the time, it had nothing to do with him anyway, but now it has become the hope of saving Yue'er.