Okay, let's go and choose a Xuan-level martial art. Ye Yuanshan restrained his mood and said with some relief.

Tang Yun walked towards the table of the Xuan-level martial arts. Since Tang Chang had agreed to teach him the Xuan-level martial arts Tiangang Qi Technique, then he would focus on the Xuan-level martial arts.

There are not many secrets on the table, and there are only three in total. In addition to the Tianyan Seal, the other two books are the Xuan-level primary martial arts, the Fengyang Seal and the Xuan-level intermediate martial arts, and the Heavenly Hell Sword Qi. What attracted Tang Yun's attention the most was the Heavenly Hell Sword Qi. Because, the whole book is very thin, only four or five pages.

Out of curiosity, Tang Yun picked up this secret book. On the cover, the four words "Heavenly Hell Sword Qi" are very powerful, as if a huge murderous aura is revealed from the words.

Turning the first page, there were a few crosses that recorded the general outline of the Heavenly Hell Sword Qi. The world's martial arts, with the sword as the respect, the sword incarnation, the heavenly sword dominates. Each of these words is cyan, which makes people feel an inexplicable shock. From the second page onwards, it is the cultivation method. However, it was a pity that there were only the first three cultivation methods. They are knife qi, knife strength and knife marks. As for the latter ones, they are all lost.

"Grandpa, why is there no one behind?" Tang Yun picked up the secret of the Heavenly Hell Sword Qi and said with a look of regret.

"This martial art, that's how it was when I got it. After years of verification, the full name of this martial art should be called the Heavenly Hell Demon Blood Sword, which is extremely powerful, but it has lost the cultivation method of the latter threefold. Tang Chang's face was also full of regret. A martial artist is always very yearning for powerful martial arts.

"Even if the cultivation method behind it is lost, with only the previous threefold, this martial art is enough to be called a Xuan-level martial art. The only drawback is that this martial art is very domineering. The cultivated Heavenly Hell Sword Qi is not only extremely lethal to the enemy, but also causes great damage to one's own body. It can be said that it hurts oneself and others, and ordinary martial artists can't cultivate at all!" Tang Chang continued.

After listening to Tang Chang's introduction, Tang Yun's heart moved. Just because an ordinary martial artist can't cultivate doesn't mean he can't cultivate.

"Grandpa, I want to try it and see if I can practice this martial art. I'll choose this martial art!" Tang Yun said.

Tang Chang frowned, and was about to persuade Tang Yun to give up the Heavenly Hell Sword Qi. But in the end, the words came to my lips and swallowed them back. "Okay, but you have to be careful. If you can't take the damage, stop practicing immediately. In addition, you can also take the Fengyang seal, this martial art is also very powerful. Tang Chang finally compromised. In his opinion, Tang Yun would eventually choose to cultivate the Fengyang Seal, after all, he had also tried to cultivate the Heavenly Hell Sword Qi at the beginning, but the powerful destructive power could not even support him, and in the end he had to choose to give up.

"Thank you, grandpa!" Tang Yun thanked with a smile on his face, and now, he understood the warmth of the family, as well as the kind of grandpa's doting on him.

In the martial arts building, Tang Chang taught Tang Yun's Tiangang Qi Technique, the Tang family's housekeeping technique. After he remembered it, he left the martial arts building. This time, Tang Yun can be said to have gained a lot. Not only did he get one Xuan-level martial art, but he also got two Xuan-level martial arts. It can be said that in the entire Tang family, except for Tang Chang, no one can cultivate so many Xuan-level martial arts.

Tang Yun began the cultivation of the Fengyang Seal. Xuan-level martial arts, sure enough, are not comparable to yellow-level martial arts, it took him several days, and he couldn't even touch the door. As a last resort, he consulted Tang Chang, and Tang Chang solved his doubts, which made him suddenly open. After spending another ten days, it finally made a small difference.

Fengyang Seal is a very powerful martial art, which can condense a burning phoenix and use the phoenix's claws to give the enemy a fierce attack. It is said that if you refine to the end of the world, it is not even worse than the average ground-level martial arts. It's just that Tang Yun has just started, and he can only condense a faint phoenix's claws. But even then, the power is terrifying. He experimented and released it at a boulder two meters square. As a result, it was smashed to pieces. This kind of power, if it hits people, I am afraid that if you don't die, you will be seriously injured. If he faced Tang Hao again, even if he used the Heavenly Flame Seal again, he would be sure to kill him in an instant.

The only weakness is probably this martial art, which consumes a lot of money. With Tang Yun's vitality reserves, he could only use it twice. This is still his dantian, which is a bigger result than ordinary people. If you are a normal person, I am afraid that you will not be able to withstand consumption.

In the end, after some preparations, Tang Yun still began the cultivation of the Heavenly Hell Sword Qi. After all, no martial artist can resist the temptation of powerful martial arts. According to what Tang Chang said, even though it was a crippled Heavenly Hell Sword Qi, its power was extremely domineering. The attack power is even more powerful than the Fengyang Seal. If you can find the triple cultivation method behind you, the whole set of martial arts. It is estimated that he has to rise to the ground level martial arts! This kind of temptation, Tang Yun can't refuse.

The first step in cultivating the Heavenly Hell Sword Qi is to transform the Yuan Qi into the Hell Qi in a specific way, which is the basis for cultivating the Heavenly Hell Sword.

After memorizing the cultivation method, Tang Yun immediately began to cultivate. Under the mobilization of the exercises, the vitality in the body immediately began to operate according to the specific path of the Heavenly Hell Sword Qi. At the same time, the Heaven and Earth Yuan Qi in the air was also attracted and began to dissolve into it.

It is very difficult to condense the prison spirit. Tang Yun worked hard for several days, but he didn't gain anything. It's just that as his proficiency rises, he can feel that it shouldn't be long before he can successfully condense his prison qi.

And so the days passed. Every day after cultivating, Tang Yun would find time to cultivate Prison Qi. I don't know why, he always firmly believes that if this martial art can be successfully cultivated, it will be of great help to him.

A few days later, maybe the opportunity came. Tang Yun cultivated the Prison Qi as usual, and after mobilizing the Yuan Qi to follow the path, the Yuan Qi did not disappear, but underwent a huge transformation.

The mobilized vitality, after being tempered and compressed, turned into a trace of blood-red airflow. Although it is very rare, only a trace of it, the terrifying destructive power is constantly emanating from this strand.

Tang Yun knew that he had finally succeeded in condensing his prison qi. Although the number is extremely small now, I have to admit that this is a good start.

"No wonder the power is extremely domineering, there is only a trace of it, and it feels very scary. If all the vitality is transformed into prison qi, it is estimated that he will be able to directly skip the level and challenge!" Tang Yun muttered as he felt the horror of the prison qi. There was a hint of excitement in his tone.

In the days that followed, Tang Yun once again made an arduous exploration. Although he suffered unimaginable pain every time, he finally mastered the use of prison qi. The damage of Hellenal Qi to the body can be repaired slowly, and Tang Yun can bring the terrifying power of Hellish Qi to the extreme. It's just that a trace of prison qi is of little use, and he needs to condense more prison qi.

During this time, Tang Yun had been immersed in penance. I basically don't know anything about Tang Jie. He didn't know that a crisis was looming over him......