While speaking, Xiao Yu also picked up a wooden branch from the side and began to write and draw on the ground.

"If you want to refine the beast fire, ordinary methods can't do it."

Xiao Yu was also very clear about this in his heart.

Beast Fire was the most original power of those demonic beasts, and his strength was only just beginning to enter the Fighting Spirit.

It was impossible to rely on his own strength to refine the beast fire.

If he could, he would have done it a long time ago.

As for Yao Lao, now only the soul body remains, and the only power that can be used is soul power.

It is even more unrealistic to make medicine old.

Moreover, Yao Lao has no experience in this area, and the failure rate is very high.

So Xiao Yu thought about it for a long time day and night, and the prototype of a plan slowly emerged in his mind.

It wasn't until he got the third beast fire today that he affirmed this plan in his heart!

"With the power of heaven and earth, to refine the beast fire!"

"The power of heaven and earth?" Yao Lao frowned.

You must know that mobilizing the power of heaven and earth is not something you can do with your current Dou Ling strength!

......

Seeing that Yao Lao was puzzled, Xiao Yu waved his hand.

"It's not me who mobilizes the power of heaven and earth."

Although Xiao Yu has advanced thinking, he also has an understanding of the world.

But he never thought of using the Dou Spirit to use the Dou Sheng.

What he wants to use is the power of heaven and earth that is independently generated between heaven and earth!

For example...

Xiao Yu pointed to the sky.

"Teacher, if thunder falls from the sky, it happens to be split on my three beast fire origins." There was a confident smile on the corner of Xiao Yu's mouth, "Will that make this beast fire tempered and become one?" ”

......

The more Xiao Yu said, the more excited Yao Lao became.

Because what he says is perfectly doable!

"Genius idea!"

While muttering to himself, Yao Lao also thought about the method proposed by Xiao Yu just now dozens of times in his mind.

There is a very critical issue here.

Yao Lao's brows furrowed.

Just now, he was completely driven by Xiao Yu's thoughts, and subconsciously ignored this.

The method Xiao Yu said could indeed make his beast fire tempered, and even produce a new fire that far exceeded the previous beast fire grade.

But those three beast fires were all refined by him with the incineration technique!

If the beast fire is extinguished under the thunder of the sky.

That Xiao Yu will be regressed in cultivation at best, and he may even become a waste person because of this!

Looking at the breezy apprentice, Yao Lao didn't believe that he hadn't taken this into account!

"You... Alas——! ”

With a long sigh, Yao Lao waved his sleeves and disappeared into the air.

......

Since that day, it has been affirmed by Yao Lao.

Xiao Yu continued to challenge all kinds of powerful demonic beasts in the Demonic Beast Mountain Range.

At the same time, I also began to look for a suitable location and opportunity.

His cultivation didn't need to think about the consequences of being injured at all.

When he decided to go to the Demon Beast Mountain Range to train, Xun'er gave him a whole pill of Na Ring!

Although the low-grade pills have been eaten almost.

But during this time, as his level increased, the level of pills he could take became higher and higher.

In addition, there is also a medicine elder accompanying him.

not only taught him to become an alchemist, but also shot many times.

Help him increase the amount of pills he has in reserve.

Therefore, Xiao Yu now is not worried about the problem of being injured and myrrh at all, let alone worrying about the supply of those pills that increase the cultivation speed.

......

In this way, Xiao Yu drilled headlong into the position where the Demon Beast Mountain Range was already biased into the depths.

began to wait for the opportunity to temper his beast fire.

On ordinary rainy days, Xiao Yu has encountered it a few times.

But those few times could not meet the conditions of thunder fire quenching, and the area of the rain clouds was not too large.

Moreover, according to Xiao Yu's observation, there are too few positive and negative free ions, and it is difficult to generate a strong current.

That is, it is commonly known as the lack of power of heaven and earth.

In order to wait for this opportunity.

Xiao Yu traveled almost all over the southern part of the Demon Beast Mountain Range.

Finally he waited for a chance!

There is a hill in the heart of the crater, which makes it an excellent location.

Even Yao Lao said that it was very suitable for arranging the formation to condense the fighting spirit.

"Look at the sky, it will start to rain tonight and tomorrow."

"There will be thunder."

"This is the perfect location!"

Xiao Yu's expression was excited, for this day, he had been waiting for more than a year in the Demon Beast Mountain Range!

Finally, let him wait for this opportunity!

......

Early the next morning.

The dripping rain was already dripping down the branches.

Xiao Yu, who had been squinting on the stone for a while, opened his eyes.

After a moment of confusion, he immediately regained his clarity.

"Hopefully... Don't let me down. ”

In Xiao Yu's mind, the time displayed on the system panel was getting closer and closer.

As a traverser, he had already roughly guessed what that time represented.

It is precisely because of this that he wants to improve his strength as soon as possible.

"Teacher, let's get started."

Hearing this, Yao Lao's soul body floated out of the ring and nodded slightly at Xiao Yu.

......

With the early morning breeze and drizzle, Xiao Yu stood on the top of that hill.

Immediately afterwards, Xiao Yu took out many things from the ring one after another.

A piece of centuries-old ebony.

A very thin wire of wire.

A strange potion.

And something that looks like a kite.

"Lead the thunder with metal wires and ignite the essence of ebony for a hundred years."

"Pour the liquid into a small puddle on the ground..."

After doing all this, Xiao Yu picked up the thing that looked like a kite with a cautious face.

Then it slammed into the sky.

"Teacher!"

......

"Got it!"

Yao Lao rose into the air, and summoned his soul power to send the kite again.

In an instant, the kite rushed into the dark clouds of the sky at a great speed.

Boom - Boom——!

First, a thunderclap sounded.

Then a dazzling blue light bloomed in the sky.

It was thunder, the power of heaven and earth!

Xiao Yu's heartbeat became faster and faster.

It must be a success!

Three beast fires floated out of his body and rose into the air.

He himself lay down on the ground in the little puddle he had set up beforehand.

．．．．．．

Immediately afterwards, Yao Lao waved his arm.

The soil on both sides covered Xiao Yu's body.

The hundred-year-old ebony core was inserted into Xiao Yu's soil by Yao Lao.

The other end is linked to the wire!

It looked as if a tomb had been built for Xiao Yu.

Yao Lao withdrew with apprehension.

The thunder in the sky is getting louder and louder.

The terrifying Heavenly Power also became heavier and heavier, as if it was about to target this mountain!

Even those weak demonic beasts on this mountain fled from the mountains and forests one after another, and fled like crazy towards the bottom of the mountain!

Even if those demonic beasts were weak, they could feel it even more, as if something terrifying was about to happen!

．．．．．．

"It's coming!"

Yao Lao's gaze froze, and the thunder in the sky gradually slowed.

But at this moment, a thunderbolt that looked like the thickness of a bucket fell from the sky!

Because of the wire that connected the kite, the blue thunder landed on the hill impartially!

The dazzling blue light instantly engulfed the hill!

The formation that Yao Lao had arranged only slowed down the speed of the thunder for a moment.

The large array shattered, and Yao Lao looked at the scene in front of him in shock.

Even if it was his cultivation during his lifetime, he had to feel a deep fear!

This is indistinguishable from the catastrophe!

The calamitous power from heaven and earth instantly moved that small hill almost to the ground!

But on that dark hill.

On a charred corpse.

A wisp of pale blue mixed with a hint of purple flame.

Born!

......