Immortal cultivation starts with copying.

The border between Xuanbingzhou and Hanhaizhou is less than one million miles long, which is not very long.

The real border line of Xuanbingzhou is much closer to Yutianzhou, at least tens of millions of miles.

Xuanbingzhou is approaching Hanhaizhou within tens of thousands of miles. It is no longer an icy world, and large areas of grassland and forests are slowly appearing.

At the junction of the two states is a mountain range about a million miles long, which runs across the two states and forms a natural dividing line.

The area near the border is very suitable for the survival of demons, and it gathers a large number of demons. It also attracts human cultivators to cross the border frequently to hunt demons.

After Chen Yunhao came out of the Blue Moon Lake, he walked continuously for more than a year, and finally saw a large area of ​​green. He knew that he was almost reaching the human territory.

After all, Chen Yunhao has lived in Hanhai Province for many years. Although he has never been to the border between Hanhai Province and Xuanbing Province, it is still easy to find out the news here.

So when he saw the green, he knew that he only needed to fly another 30,000 to 50,000 miles to reach the mountains that marked the dividing line.

Thirty to fifty thousand miles would only take half a day, and at this moment Chen Yunhao felt like he was home.

After flying for more than 10,000 miles, he finally saw a human cultivator.

This was the first time he had seen his fellow tribesmen in several years, but the cultivator was only at the Nascent Soul stage and was fighting with a transformed demon.

Chen Yunhao's sudden appearance startled the demon, causing it to turn around and run away.

“Thank you, Senior…!”

The Nascent Soul cultivator was a middle-aged man with the cultivation base of the middle stage of the Nascent Soul. He did not chase after the demon, and he was already at a disadvantage.

If Chen Yunhao had not appeared, this Nascent Soul cultivator might not have been able to escape after a long time.

Chen Yunhao just happened to be there. He glanced at the Nascent Soul cultivator and flew past without stopping.

This Nascent Soul cultivator was probably here to hunt monsters, but unfortunately, he encountered a transformed monster with a higher level of cultivation than him.

This kind of thing happens frequently in the border area between humans and demons. It's either you kill me or I kill you. It's a two-way battle, and it depends on who has better skills.

Seeing that Chen Yunhao had gone far away, the Nascent Soul cultivator breathed a sigh of relief.

Sometimes in such a desolate wilderness, what human cultivators fear most is not the demons, but their own kind.

Human hearts are the most unpredictable and human nature is the most sinister. There are no laws or rules here, so it is common for the mantis to stalk the cicada while the oriole is waiting behind.

It is not uncommon for high-level cultivators to kill low-level cultivators at will. It is nothing more than killing people and stealing treasures.

Therefore, Chen Yunhao's departure meant that this person was truly away from danger.

After Chen Yunhao's figure completely disappeared, the Nascent Soul cultivator flew away in the direction Chen Yunhao had left.

Although the Tianbi Mountains are about a million miles long, they are not the largest mountain range in the entire spiritual world and may be ranked after the top ten.

The Tianbi Mountains are about a million miles long and nearly 100,000 miles wide at their widest point. Countless monks make their living from this mountain range.

Chen Yunhao rested in the Tianbi Mountains for one night, and only flew across the entire Tianbi Mountains in one breath the next day.

On the side of the Tianbi Mountains close to Hanhaizhou, there are many immortal cities, which are typical examples of relying on the mountains for their livelihood.

After crossing the mountains, Chen Yunhao found a nearby fairy city to rest for a few days.

Chen Yunhao was not physically tired, but he was a little mentally tired. After all, he had been away from human society for many years, and he was still a little uncomfortable with his sudden return.

When we return to the human world, we don't need to be so tense.

He didn't plan to stay here for long. He didn't have any acquaintances and didn't need to buy anything. After a simple rest of three or four days, he embarked on the real return journey.

Flying about 20 million miles from the Tianbi Mountains to the heart of Hanhaizhou, you can reach Yunshang City, and then change direction from Yunshang City to Taiyi Gate.

Everything will be easy once we return to Hanhai Zhongzhou. Even if it's a place we haven't been to, Chen Yunhao has a map in his hand and won't easily go wrong.

After getting back on the road, Chen Yunhao used the Aurora Boat to travel. Now he had more time to study several magical powers that he was eager to master.

The first is to re-cultivate the thunder method, and the second is to master the spirit appraisal technique.

During these years of traveling, he was not without any ideas, and he had repeatedly deduced several methods in his mind.

The next step is to experiment one by one to find the most feasible way to condense the lightning ball, which he simply calls the thunder ball.

Not only does it have to be condensed, but the speed also has to be increased. When cultivators fight, the speed and time are extremely fast. If the condensation speed of the thunder ball is slow and it cannot be used in actual combat, it will be useless.

Since it is useless, it is better not to do it. As for the spirit-judging technique, it is not difficult, but it cannot be tried lightly. Once started, his life span will be shortened by several years, or even dozens of years.

This is not a joke. Who can joke about his own life?

Moreover, on the way back, whenever there was a thunderstorm, Chen Yunhao would stop and observe carefully for a while.

He wanted to observe the various forms of thunder, and as for where thunder came from, everyone knew it.

However, the thunder in nature is different from the thunder cultivated by cultivators. There is an essential difference between them.

But no matter how much the human race practices, it is impossible for them to reach the level of heavenly thunder.

Chen Yunhao was very clear about this, and he just wanted to find a way to condense a thunder ball.

He remembered that when he was at the edge of the spiritual world, the sky and the ground were densely packed with thunder balls. He still hasn't figured out how those thunder balls were formed.

Because there is nothing outside that boundary, there are no conditions to create dark clouds and produce lightning.

No matter what form of lightning it is, it is extremely violent.

What Chen Yunhao is thinking about now is to compress a bolt of lightning into a lightning ball first, and then find a way to compress two or more bolts of lightning together.

According to Chen Yunhao's idea, the more lightning compressed into a thunder ball, the greater its power will be.

Ideas are just ideas, but when Chen Yunhao actually started to experiment, he realized how difficult it was.

Chen Yunhao sat cross-legged on the Aurora Boat, raised his hands, placed his palms together, and used his spiritual power to form a closed space between his hands.

Then he released a palm thunder, which was like an electric current, flashing continuously between Chen Yunhao's hands.

Chen Yunhao tried to use his spiritual power to compress the tiny lightning bolt. There was no problem at first, but later he felt it was becoming more and more difficult.

Even though this palm lightning was only a little thicker than a chopstick, he compressed it with all his might, and it could only be compressed to about half before he could not go on.

There seemed to be an extremely strong force in the palms of his hands, preventing him from continuing to compress, and a sense of danger also arose in his heart.