Immortal cultivation starts with copying.

As Chen Yunhao exerted his full power, a large amount of water energy was compressed to the limit, but after being compressed to a certain extent, it could no longer be compressed.

At this time, Chen Yunhao was thinking about how to purify the water energy in order to compress more and purer water energy.

But how to purify it? It can be purified through flames when refining the weapon.

But this is water energy. Once it is purified with flames, all the water energy will disappear.

Chen Yunhao thought about this problem for a long time and only came up with one solution. He didn't know whether it was feasible or not, so he decided to do an experiment to see.

His inspiration came from an object in the mortal world.

Chen Yunhao remembers that when he was a child, his mother often used a particularly fine sieve to sift rice, filtering out all the useless rice husks and leaving only clean rice.

Chen Yunhao used this principle. Under the stimulation of spiritual power, the water energy he gathered could also oscillate, and then a small channel was left around the condensed water energy.

As the water energy continued to vibrate, some impurities invisible to the naked eye slowly flowed out.

Under Chen Yunhao's spiritual consciousness, he could see this process clearly.

“It really works…!”

Chen Yunhao showed a faint smile on his face. This was a purification method that was unique to him and no one else in the world could do it.

With the constant shaking, the water energy condensed tighter and tighter, slowly shrinking to the size of a washbasin.

But Chen Yunhao was not satisfied and thought that it could be compressed further.

Chen Yunhao understood one thing: the greater the compression, the greater the rebound will be, and naturally the greater the power will be.

Chen Yunhao used all his strength to mobilize the water energy, and 80% of his magic power was used to compress the water energy.

When he compressed the water energy from the size of a washbasin to the size of a head, he could not go any further.

Not only can I not go on, but I can't suppress it anymore.

Chen Yunhao hurriedly pushed forward, and the water energy he condensed fell far away on the water surface a hundred feet away.

There was a dull bang, and a huge wave was blown up into the sky on the water surface.

A water pit over ten feet in size was blown open in the middle of the river, and countless fish in the water were blown into the sky.

Although he failed again, Chen Yunhao was still quite satisfied because he learned another method of purification by agitation, which was progress and gain.

This time it is condensed with water energy. If it is replaced with thunder energy, the power will increase by several levels.

However, during the process of cohesion, Chen Yunhao discovered new problems.

The first is that the speed of condensation is a bit slow. At this speed, it cannot be used in actual combat. Before he can finish condensing, he will probably be killed by others.

Therefore, the first issue to be resolved is the speed of condensation, and the second is whether these thunder balls can be temporarily stored after condensation.

If these thunder balls can be preserved in other ways, then the first problem will be solved.

He can condense a large number of thunder balls in his spare time and use them directly when needed. There is no question of speed.

Chen Yunhao stood by the river, carefully recalling the whole process.

But the more I thought about it, the more confused I became, because the more I thought about it, the more problems I found, and they were all very difficult problems that I had no idea how to solve.

Just like that, Chen Yunhao stood by the river with a frown on his face, motionless for two hours, his head about to explode from thinking about it.

"Okay, don't think about it. This isn't something you can fully comprehend. This involves part of the operation of the laws of nature...!"

"Senior, you're awake...!"

Chen Yunhao was surprised that the spirit of the weapon finally woke up.

It has been several years since they last devoured the Xuantian Lingteng. Chen Yunhao once entered the ancient mirror space to see that the spirit of the weapon had been in a state of seclusion.

Now that the spirit of the weapon has awakened, it means that its strength has increased by countless times.

Chen Yunhao was very clear about this, as he had seen the Xuantian Lingteng with his own eyes.

With the innate spiritual treasure as a foundation, the weapon spirit's strength should be able to walk sideways in the spiritual world as it said.

"How do you feel, senior?"

"Very good, the spiritual world is under control. Unfortunately, the power of that innate spiritual treasure is still a step below...!"

There was a hint of disappointment in the weapon spirit's words, and it was obvious that he was not very satisfied.

"So, what plans do you have next, Senior?"

"Plan... that depends on chance. Maybe there will be another chance before you ascend to the immortal realm. Everything will be up to fate!"

Obviously, there are some things that even the spirit of the weapon cannot control.

"As for you, your cultivation has been delayed quite a bit these past few years due to running around. Go back and cultivate properly... And if you want to condense the lightning ball, there's no need to go through so much trouble. I have a ready-made method..."

As soon as the spirit of the weapon finished speaking, a piece of information was imprinted in his mind.

This seemed to be a method of drawing talismans in the void, which was very similar to the shadow talisman technique he was familiar with.

However, these runes were different from the runes he encountered in the spiritual world. They were not written in silver script at all.

"Senior, what kind of rune is this?"

"Strictly speaking, this is immortal script, which I modified into golden tadpole script, making it suitable for you to use now. Of course, its power is also slightly less."

Ever since the weapon spirit woke up, Chen Yunhao felt that its personality seemed to have become more stable, not as irritable as before.

But the feeling Chen Yunhao got was even more unfathomable. It was not the feeling of looking up to a high-level cultivator, but the feeling of facing the boundless void.

The return of the weapon spirit made Chen Yunhao feel at ease. It was as if he had found a backbone and nothing could stump him.

Since the spirit of the weapon has no other arrangements for the time being and has solved the big problem in front of him, there is no reason for him to stay here.

I’m on the road again, this time heading straight back to Taiyi Sect, and I won’t be delayed by anything else.

After getting back on the road, Chen Yunhao carefully studied the method taught to him by the spirit of the weapon.

The spirit of the weapon did not say what it was called, so Chen Yunhao temporarily called it the Thunder Condensation Technique.

This Thunder Condensation Technique is very simple, with only three simple runes.

But in fact, it is still difficult to actually operate it, because the golden tadpole text does not belong to the runes of the spiritual world.

So even though Chen Yunhao is well versed in the art of talisman making, he still needs a lot of practice to carve these three runes well.

Moreover, this condensed thunder ball can be preserved for a long time.

Strictly speaking, this kind of golden tadpole script is not condensed thunder energy or even lightning, but the golden tadpole script itself.

These are three runes related to thunder, called thunder runes. Not to mention that they are also related to shadow runes. Overall, the principles are similar.

However, this kind of magic cannot be performed by people in the spiritual world. To put it bluntly, it is a fairy magic.