The next day, Sunset Forest!

At this time, the sun is high in the sky, and the environment in the forest makes the surroundings not very hot, but somewhat humid.

However, this is not affected by Cao Kun and Dugu Bo at all.

They stood quietly next to Dugu Yan, helping her guard the surroundings to prevent the sudden appearance of soul beasts from interrupting her absorption of soul rings.

Yesterday, after Cao Kun refined his clothes and sword, he used his scarce knowledge to give the sword a name.

Fire Dragon Sword!

Although after Cao Kun's changes, the appearance of this sword is no different from that of an ordinary sword.

But its own characteristics have not changed much, the sharpness has not decreased, and using the Fire Dragon Sword to send out a fire attack can also increase the damage.

In particular, it can also release fire poison, and after scratching others, the fire poison will be injected into the body with the wound, and the toxicity is not weak.

These abilities have already been tested on the soul beast that Dugu Yan is absorbing the soul ring.

Therefore, the name Fire Dragon Sword is really suitable for Cao Kun, not that he can't think of anything better!

As for the costume made of the dragon bone of the Water Dragon King, he took the name of a Ruyi Baibao Clothes, which is very in line with the characteristics of various clothes that can be changed at will.

After obtaining two treasures, after resting for one night in the eyes of ice and fire, Dugu Bo took the two of them to obtain the fourth and third soul rings.

Along the way, with Dugu Bo's understanding of the Sunset Forest, they quickly found a soul beast suitable for Dugu Yan.

A 5,000-year-old dragon attribute poisonous soul beast can release a colorless and odorless toxin, which makes people unconsciously sore and weak, and the operation of soul power will also stagnate.

As more toxins are inhaled, the poisoned person gradually becomes immobile.

This soul beast was carefully selected by Dugu Bo, absorbing the soul ring of this soul beast, there is a high probability that you will obtain this toxin ability, and you can also make your own toxin colorless and tasteless, killing people invisibly.

And having the dragon attribute is to allow Dugu Yan's martial soul to evolve into a real dragon in the future!

Every soul skill absorbed by the soul master will subtly change the martial soul, and when it comes to the title Douluo, it can be evolved according to the characteristics of the soul beasts it has absorbed before.

Dugu Bo's Emerald Phosphorus Snake Emperor Martial Soul came from this, and every soul ring he absorbed was from an extremely powerful snake soul beast, so the Emerald Snake Emperor was also known as the ancestor of ten thousand snakes in the Douluo Continent.

This principle also explains why the martial souls of Title Douluo are all top-level martial souls.

As long as you have the chance to reach the Title Douluo, the martial soul will evolve into a top-level martial soul if it is not a top-level martial soul.

After absorbing the Dragon Grass, the martial soul has also evolved, even if the age of this soul beast exceeds the absorption period of the Soul Sect for several decades, Dugu Yan will not have much trouble absorbing it.

After all, this soul beast was personally selected by Dugu Bo, as a Title Douluo, he naturally understood that the number of years the soul master absorbed the soul ring was related to the soul master's physical fitness, and he was not worried about whether Dugu Yan could succeed at all.

Now, as long as other soul beasts don't interfere with Dugu Yan, it's only a matter of time before the absorption is successful.

"Hmm~"

Soon, Dugu Yan let out a soft groan, and then opened his eyes and stood up.

She said excitedly:

"It's successful, my fourth soul skill has obtained the poison of that soul beast's soft tendons."

"And now that I release the toxin, it will become colorless and odorless, and people will not be able to detect it!"

"Also, the toxicity of my original toxin has also increased, and now it is stronger."

As a soul master who cultivates poison skills, the progress of soul power also represents the progress of poison skills, and the toxicity of one's own toxins will also increase!

As she spoke, she walked happily to Cao Kun's side.

Cao Kun took her hand and said happily:

"It's getting more and more powerful, Yanzi, presumably you should be the most powerful in your team now!"

"I'm going to call my sister!"

Dugu Yan shook Cao Kun's hand back, and his tone had a hint of teasing.

"Ahem."

"Yes, as I expected, now your poison has become colorless and tasteless, and it will be difficult to detect it when you release it in the future."

"After that, if you have a soul ring, just find a soul beast with a dragon attribute and poison."

Dugu Bo coughed twice, interrupting the flirting between the two, and then said to Dugu Yan with a straight face.

In this regard, Dugu Yan hurriedly nodded in agreement.

I don't know why the two always forget that Dugu Bo is next to them.

"Okay, now let's go to the west of the Sunset Forest, the soul beast that Cao Kid needs is over there."

After speaking, Dugu Bo summoned the true body of the martial soul and jumped up!

And the two of them also jumped on the body of the Emerald Snake Emperor after him.

With a wave of Dugu Bo's hand, the Bibi Snake Emperor, who was more than thirty meters away, was advancing at great speed, and no soul beast dared to come out and block the way along the way.

After walking for a while, seeing that he was almost at his destination, Dugu Bo looked at Cao Kun and said:

"Boy Cao, your current physical fitness can absorb one or two thousand years of soul beasts."

"But after the soul beast reaches 10,000 years, it will not only give birth to a certain amount of wisdom, but also have spiritual power."

"Absorbing their soul rings not only requires strong physical fitness, but also good mental strength to resist the soul shock of soul beasts."

"Now I can't see the strength of your spiritual power, or we will absorb an eight- or nine-thousand-year-old soul beast first this time, and when you reach level 40, you will be absorbing a thousand-year-old soul beast."

Hearing this, Cao Kun's brows shrank slightly, and a thoughtful expression appeared on his face.

It's true that now even he doesn't know how strong his spiritual power is, what if it's not enough, now that the fairy grass is there, and the inheritance of the Water and Fire Dragon King is also in hand, it's good to be stable.

Thinking of this, Cao Kun was about to nod when Gu Yuena in the sea made a sound.

After Cao Kun fell asleep last night, he planned to go to Zhihai to find Gu Yuena, but he didn't expect to be kicked out by her and asked him to study with her in a few days.

Although Cao Kun was a little uncomfortable, he didn't say anything.

In fact, it wasn't that Gu Yuena didn't want him to enter the Sea of Knowledge, but that she was moving in order to cover up Cao Kun's sacrifice to refine the dragon bone of the Water and Fire Dragon King, and that trace of divine thought was almost exhausted.

Now she plans to abandon the shell in the Star Dou Great Forest and return her entire soul to Cao Kun's sea of knowledge.

First, because the body is almost useless, it will take at least tens of thousands of years to recover a little, and during this period, it will consume the power of her divine soul, so that she has to pay attention to that side at all times.

Second, I don't know what is going on with this human kid's martial soul, this wisp of divine thought stays next to his martial soul, and there is actually a feeling of strength, which makes Gu Yuena a little surprised and very surprised at the same time.

So he planned to transfer all his divine souls to Cao Kun's sea of consciousness in order to recover quickly.

Of course, she didn't completely abandon the body in the Star Dou Great Forest, she still had some power in it, if Cao Kun was co-opted by the people of the God Realm to kill her in the future, she would also have a way to escape.

That's when she had to recover even longer.

But the wealth is in danger, take a gamble.

That's why Cao Kun was kicked out by her when she wanted to enter the sea of knowledge last night, and it was the critical juncture of the transfer of the soul at that time.

Of course, Cao Kun didn't know about this.

At this time, Gu Yuena spoke:

"Don't worry, your current spiritual power can probably withstand the soul shock of more than 20,000 years of soul beasts."

"Rest assured to absorb the 10,000-year soul ring, if something happens, I can help you solve it."

Her tone was very confident, and she didn't pay attention to the soul shock.

Hearing this, Cao Kun changed his previous thoughts, looked at Dugu Bo and said:

"Grandpa, don't worry, what I got before has a way to help me resist soul shocks, just choose the Ten Thousand Year Soul Beast!"

"Haha, that's good, it's coming, and the place ahead is where the Absolute Wind Bird often stays."

Dugu Bo did not persuade, but laughed happily twice, according to what Cao Kun did before, he also believed that Cao Kun grasped it again.

The third soul ring of ten thousand years, this kid won't really become a god in the future!