There is a super cheating device like Tianhuang World. For any practitioner, it is definitely a second place to practice any martial arts or improve the realm of the entire universe.

After all, with the current terrifying time ratio of Tianhuang World, only one day has passed, and hundreds of thousands of years have passed. With such a powerful time ratio, it may not be particularly difficult for Chen Xuan to comprehend all the remaining eight fields.

During the ten months of retreat in the Heavenly Dao Holy Academy, Chen Xuan not only merged his nine-level gold body with himself, possessed nine-level combat power, but also comprehended the realm of sentient beings.

But if Chen Xuan had been practicing in the Tianhuang World in the past ten months, how terrifying would his progress be?

After Chen Xuan went into seclusion in King Chen's Palace, many powerful people from the King Chen clan also chose to seclusion, especially the senior executives of the King Chen clan. They were all at the peak of the Immortal Realm, and what they wanted to sprint to the realm of cause and effect will be the realm of cause and effect.

If the Chen royal family can give birth to a group of powerful people in the realm of cause and effect, then with the powerful strength of the Chen royal family and the support of Chen Xuan, there will be no problem in walking sideways in the entire Sun group.

In the secret room, after Chen Xuan began to retreat, a dark sword soul seemed to come from the deepest part of hell, filled with a heart-wrenching and heart-warming aura, and even the air around it was extremely cold.

This black sword soul was suspended above Chen Xuan's head, as if he had a certain consciousness, constantly flying, trying to break through this secret room.

The higher level of sword intent is the sword soul, and the one above the sword soul is the sword domain.

The sword domain is the domain, forming a world alone.

Slowly, Chen Xuan's divine thought power had already covered all the ruthless sword soul, feeling and comprehending everything therein.

It is a very long process to understand the ruthless sword domain from the ruthless sword soul. It can be as fast as half a year, as many as several years, or even ten years of hard work may not be able to understand the key.

In a blink of an eye, more than three months have passed since Chen Xuan was in seclusion in Tianhuang World. Although he had some insights during this period, he had not yet understood the essence of the ruthless sword domain and was still a distance away from Success.

There is no time to practice. With Chen Xuan's full understanding, time soon came again eight months later. But even after spending some hard work, it is still one step away from success.

However, this situation also made Chen Xuan feel that he wanted to control the second sword domain power from his various sword souls, and the difficulty was much higher than before.

In this case, the third sword domain, the fourth sword domain... until the ninth sword domain power, the difficulty of each will be increased, and the time required may be doubled.

However, Chen Xuan was not worried about anything. In the world of heaven, he had time. Even if it took thousands, tens of thousands, hundreds of thousands, or even millions of years, as long as he kept on, he would always have a day of success.

Before we knew it, time soon came three years later.

On this day, under Chen Xuan's cultivation, the black ruthless sword soul floating above his head suddenly trembled, and a stream of ruthlessness, as if to destroy all things in the world, burst out from the ruthless sword soul.

Immediately afterwards, the trembling ruthless sword soul sank directly into Chen Xuan's mind, and replaced it with a dark-colored defense spreading around Chen Xuan as the center, occupying the entire secret room.

This scene was like a scene in a science fiction movie. The black defense covered Chen Xuan and he could not see his shadow at all.

Not only that, inside this black defense, the ruthless aura was like all living beings falling into despair, leaving only cold negative emotions. Even Chen Xuan, who was in it, could not withstand this aura. He felt that his mood had been affected. If he stayed here for a long time, he might become a ruthless and bloodthirsty killing demon!

"The Relentless Sword Domain has been completed!"

Chen Xuan opened his eyes, and there was a heart-pounding and heartless aura in his dark eyes. As he waved his hand, the black defense instantly disappeared into the secret room.

"It took me almost half a year to comprehend the Sword Domain of All beings. It took me three years to comprehend the Sword Domain of Relentless Sword Domain. I wonder how long it will take for the next Great Love Sword Domain?"

Chen Xuan thought so in his mind, and then he closed his eyes again, and the white great love sword soul instantly appeared above his head.

Such a boring practice has no end, just like a barefoot ascetic. After climbing a mountain, there is another higher mountain to conquer, and the same is true for cultivation. Breaking through one realm and another more difficult realm, it is like a bumpy and rugged life, which cannot be smooth all the way!

Five years, seven years, ten years...

With Chen Xuan's continuous practice, it has been a full ten years since he controlled the second ruthless sword domain.

At this time, Chen Xuan controlled the second Great Love Sword Domain.

"The difficulty of controlling the Great Love Sword Domain is so much higher than controlling the Relentless Sword Domain, and the time has increased several times!" Chen Xuan slowly opened his eyes. He was thinking how long will it take for the next fourth Hell Sword Domain to calculate based on this exponential difficulty?

One hundred years? Or hundreds of years?

However, even if it is difficult, Chen Xuan will still not give up. This road has been paved. As long as he finishes, he can double his combat power. There is no reason to give up.

What's more, even the Nine Tribulation Sword Body, a peerless martial art that made Chen Xuan feel scared, never thought of giving up, let alone these nine sword domain powers!

Once he improves all his skills, Chen Xuan will also try to continue practicing the Nine Tribulation Sword Body.

Although this kind of exercise is the most difficult and scary technique Chen Xuan has ever seen so far, once he succeeds in practicing such a domineering exercise, its power will definitely exceed his imagination.

The world of the world is one hundred years later.

At this time, Chen Xuan completely controlled the fourth Hell Sword Domain.

The difficulty of this step has been increased ten times compared to before.

Two thousand years later, Chen Xuan controlled the fifth Shura Sword Domain.

Ten thousand years later, Chen Xuan controlled the sixth Sword Domain of Reincarnation.

The difficulty of improving each step is dozens of times.

"There are only the last three sword souls left. I don't know how many years it takes for me to comprehend the three sword souls of human sword souls, earth sword souls, and heaven sword souls?" A hint of vicissitudes and loneliness flashed in Chen Xuan's eyes.

Among the nine sword intents he controlled at the beginning, and among the nine sword souls he controlled behind, human sword soul, earth sword soul, and heaven sword soul were the most difficult.

And now he wants to comprehend the sword domain from these three sword souls?

How difficult is it?

As Chen Xuan continued to practice, millions of years seemed to pass by. During this period, Chen Xuan did not make much progress in the understanding of human sword souls.

Three million years, five million years...

Ten million years...

These long years are too lonely, even if they are as strong as Chen Xuan, they almost want to give up.

After all, more than ten million years have passed by an era based on the time outside. With such a long time, even those old monsters who have lived for several epochs may not be able to persevere.

One million years...

Thirteen million years.

Chen Xuan spent 13 million years on the understanding of human sword souls.

At this time, Chen Xuan completely understood the human sword soul. Such a terrifying span was more difficult than the sixth reincarnation sword soul!

"It's too long, it's too difficult!" Chen Xuan's eyes were turbid, and he had been in seclusion for 13 million years and understood the human sword soul. Even he was almost collapsed.

Although the final result was what Chen Xuan wanted, and he had already controlled seven sword domains, this terrifying time really made him feel powerless.

Moreover, it is so difficult to comprehend the human sword soul, so what are the remaining earth sword souls and heaven sword souls?

At this end of the year, Chen Xuan felt a little melancholy, and at the same time he was a little lucky. If it weren't for the existence of the Tianhuang World, the difficulty of him to control the nine sword domains in this life would definitely be hell!

However, even if the remaining Earth Sword Intent and Heaven Sword Intent will take 20 million years, 30 million years, or even longer, Chen Xuan will have to face it.

However, just as Chen Xuan planned to continue practicing, Lin Suyi also came outside the secret room.
Chapter completed!