While talking, the two also sorted out the huge number of books and divided them into categories.
The ground is divided into ten areas, and the books stored in the first area are Jiuyou Xuangong.
The other nine areas are the tricks of the Nine Nether Locking Ghosts, from the first level to the ninth level.
"Hurry up and practice!" Xiang Nan urged.
That Yaya couldn't wait any longer, she sat down hurriedly, opened a book of Nine Nether Mysteries, and began to practice silently.
But as she practiced, she frowned from time to time.
About half an hour passed, the solemn expression on her face became deeper and deeper, and she didn't make any progress in practicing.
Under Xiang Nan's questioning, Na Yaya said helplessly: "Although this Jiuyou Xuangong is powerful, the more powerful it is, the more complicated it becomes."
"I am only proficient in trickery, but I don't have a deep understanding of the entire Xuan Dao system. My master has never taught me these things."
"But the Nine Yin Ghost King is a master of Xuan Dao. I... um, I don't quite understand the Nine Nether Mysterious Art he created."
Xuan Dao is a huge system, and the most powerful method used to kill people is trickery, but if you only learn trickery, you will not be able to dabble in alchemy, array formation and other fields.
Ya Ya is majoring in trickery, and she doesn't have a deep understanding of other areas of Xuan Dao. Xiang Nan has already seen this from her previous alchemy.
Xiang Nan smiled and said: "Don't worry, you are proficient in tricks, but not in other fields, but I know a thing or two about other fields, but I don't know anything about tricks."
"The two of us just complement each other!"
"Come on, let me help you."
The two sat down side by side and read a book together.
The Nine Serenity Mysterious Art is composed of different knowledge in the field of Xuan Dao. Among them, Ya Ya is the fastest to understand the tricks, and he can understand it at a glance.
As for the other realms of Xuan Dao, she couldn't understand it, but Xiang Nan could.
Xiang Nan told her directly what he understood.
This means that two people can only comprehend half of the Nine Nether Mysterious Kung Fu, but when combined, it becomes a complete kung fu.
The two of them cooperated in this way, and gradually, they figured out the book of the Nine Nether Mysterious Art.
Yaya excitedly began to concentrate on cultivation.
She already has a strong foundation in Xuan Dao, and at the same time, she is the best among Xuan Dao monks, so she has laid an extremely solid foundation.
On this basis, learning the Nine Serenity Mysterious Kungfu will be more effective with half the effort.
Soon, after only four hours, wisps of black air appeared on the surface of Yaya's body.
The black air was like a snake, constantly coming out of Yaya's eyes, and then going in from his mouth, ears, and nose.
It seems that this kind of scene is not very beautiful, but it is extremely amazing.
At the later stage of the practice, the black energy in Yaya's body has turned into streaks of black light, and it no longer comes out from the eyes, but from all the pores of the whole body, constantly coming in and out.
Xiang Nan watched with horror, fearing that this terrible scene would cause huge backlash to Yaya.
But judging from the results, he found that his worries were unnecessary.
That Yaya's mental power is getting stronger and stronger! The wound on her body actually started to heal.
And her predicament of becoming obsessed has also been alleviated.
Another four hours passed, and Yaya finally practiced the Nine Nether Mysterious Art thoroughly!
She opened her eyes, and her eyes were like two endless abysses!
"Are you ready?" Xiang Nan asked hurriedly.
That Yaya said excitedly: "Brother! I'm cured! And stronger than before!"
"This Nine Nether Mysterious Art actually has blessings for the entire field of trickery in the profound way! Even the trickery I have learned before has been enhanced together!"
"Now, I'm going to learn the lock ghost technique."
Xiang Nan pondered and said: "If you have learned the Nine Nether Mysterious Kungfu, you should stop there. The ghost locking technique is not a serious thing. If you learn it, I'm afraid it will do you more harm than good."
"The purpose of our trip is to make you recover."
Yaya pointed to the seven masters who had the ninth level of heavenly tribulation outside, and said: "If I don't learn, how can we deal with these seven guys, we won't be able to get out."
Xiang Nan hesitated, he knew what Ya Ya said was an excuse, she simply wanted to learn by herself, but what she said was indeed correct.
In desperation, Xiang Nan could only nod in agreement.
Na Ya Ya happily kissed Xiang Nan, and immediately started to study.
The Nine Nether Mysterious Art is the "cornerstone" of the ghost locking technique, and one must learn this technique before one can practice the ghost locking technique.
And to learn the technique of locking ghosts, no matter how high a monk's own level is, he must learn from scratch.
Na Yaya started to learn from the first level.
Soon after, the first level of learning was completed.
But seeing her take a deep breath, and then quickly make a seal with her hands, she suddenly heard the rattling sound of chains dragging. This sound was heavy and distant, as if it came from another world.
The moment the bud bud seal was completed, nine black chains suddenly appeared on her hands!
She threw those chains to the ground, and all nine chains pierced through the ground. Immediately afterwards, she pulled nine living ghosts out from the ground!
These nine ghosts, bound by chains, crawled around Ya Ya, the scene was very astonishing.
After that, Ya Ya will learn the second level again.
Soon, the second level also learned, the same nine chains were thrown into the ground, and the nine chains were pulled up, which were the same as the raw ghosts, but one size bigger.
In the third stage, nine evil spirits will be pulled up, and in the fourth stage, nine hell dogs will be pulled up.
These nine hellhounds have already made Xiang Nan frightened. They are nine three-headed dogs burning with black hellfire.
The warriors of the Tianyan Sect outside, the more they looked at it, the more their expressions changed drastically, and they all cursed outside the barrier.
But Yaya didn't care about them at all, she only cared about her own cultivation.
The fifth layer is to summon Rakshasa. This kind of thing is five meters in size, ugly and ferocious in appearance.
Xiang Nan has heard of this kind of thing, but has never seen it with his own eyes. He only knows that the Raksha cannibal is an extremely vicious ghost.
Then, Yaya learned the sixth level, and the lock came only the Rakshasa King.
This King Rakshasa is two meters taller than Rakshasa, each of them is much stronger than Rakshasa, and holds weapons, and his eyes breathe fire.
The seventh level, Ya Yasuo came, is the famous Shura.
Shura, who is good at fighting, is also known as the ghost god, but the god of war among ghosts.
There are various legends about Shura. It is said that this thing is a demigod in Buddhism and one of the eight heavenly dragon guardians of Buddhism.
In other versions, Shura is a fierce ghost through and through, who kills countless people and only pursues fighting in his life.
But no matter what kind of legend you look at, the common point of every legend about Shura is that this kind of thing is warlike and always victorious.
This thing has six arms and three heads, and its face is extremely ugly.
If Yaya learns the eighth level again, the one who will come is the Shura King!
These nine Shura kings were floating in the air, their bodies were bound by chains, and they were slowly rotating around Yaya.
This thing is even more frightening. They no longer have a complete face, and the entire face seems to be covered by an armor, only the eyes are exposed.
The whole body is covered with a bright black solid shell, like Shura in hardcover, but even more powerful.
As for the ninth level, Yaya also learned it later.
This time, what she locked was the seven-headed Shura God!
That Asura God is as tall as a hundred meters!
The face of this thing is gone, it's just a mass of black and blue void, on the face of the void, there are only two red spots of light, which are the eyes. Yaya said, his nickname of Void Shura was actually given by others based on the appearance of God Shura.