In fact, Xue Yi also tried to absorb these dragon souls, but maybe the human soul and the dragon soul were not compatible, so he couldn't absorb it.

The skeleton dragon also knew that its soul would be stronger after absorbing that dragon soul, but there were too many dragon souls in the outside world before, and it was very troublesome to absorb a dragon soul, if there were thousands of dragon souls together, it would not be able to absorb it at all.

At this time, Xue Yi threw the dragon soul to it, and it immediately pounced on the dragon soul.

The dragon soul was also not afraid of death, and flew over to fight with the soul of the skeleton dragon.

Xue Yi's golden soul was guarding against the invasion of the other nine dragon souls, and those nine dragon souls wanted to pounce on Xue Yi, but they were all blown away by Xue Yi's punches and kicks.

He turned around to look at the skeletal dragon, only to see that the skeletal dragon's soul and the dragon soul had already fought to a fever pitch. When the skeletal dragon died, his soul was greatly damaged, and although he slowly recovered in the end, it was still much weaker than the original soul. And this dragon soul is the soul of an extremely powerful dragon in ancient times, which is already stronger than the skeleton dragon, so it is difficult for the skeleton dragon to defeat it.

However, no matter how it is said, the dragon soul has also gone through 10,000 years of attrition, and its strength has been greatly weakened compared to the beginning, so the skeleton dragon finally won after a difficult fight. It wrapped up the dragon soul and began devouring it.

The entire devouring process lasted half an hour, and when it was devoured, it was immediately doubled in size compared to before.

This made the skeleton dragon extremely happy, it had been a long time since it had experienced the power of a soul.

Xue Yi nodded. Then he turned his head and saw that the nine dragon souls who were not afraid of death flew over again, and he waved his hand again. Grabbed a dragon soul by the neck and threw it at the skull dragon.

This time, the battle of the Skeleton Dragon was much easier than just now, after all, its strength was twice as strong as before.

About half an hour later, the skeleton dragon had completely devoured the dragon soul.

In the next few hours, Xue Yi threw those dragon souls to the skeleton dragon one after another, and the skeleton dragon devoured them. And he stood aside. Prevent those dragon souls from rushing up.

By dawn the next day, the skeleton dragons had completely absorbed the souls of those dragons.

At this time, the soul of the skeleton dragon was already ten times stronger than it was.

Xue Yi said to the Skeleton Dragon, "It should be before dawn at this time. I'll take this opportunity to catch a few more dragons and come back. ”

As he spoke, Xue Yi's golden soul moved, and a golden light shot out from the bloodthirsty sword and flew into Xue Yi's body.

The purple electric Tyrannosaurus Rex, which was a little bored and irritable beside Xue Yi, was startled.

Xue Yi said to the purple electric Tyrannosaurus Rex: "Little Overlord. While the sky is still dark. Let's go catch a few more dragons and come back. ”

The Purple Electric Tyrannosaurus Rex was already depressed because of the suppression of the Ice and Snow Dragon, but when Xue Yi heard this, he suddenly let out a happy hiss.

Xue Yi jumped on the back of the purple electric Tyrannosaurus rex, and one person and one dragon flew towards the bottom of the mountain.

Soon, Xue Yi used the previous method again, constantly teleporting, and used the bloodthirsty sword to sneak attack those dragon souls. When the Bloodthirsty Sword absorbed more than twenty dragon souls, Xue Yi once again came to the Fire Emperor Mountain. The soul enters the blood-colored space of the Bloodthirsty Sword.

When Xue Yi entered the blood-colored space, he saw that the twenty dragon souls were flying up and down around the soul of the skeleton dragon. Attacking it.

Originally, the skeleton dragon was also in a soul state, and those dragon souls would not take the initiative to attack the skeleton dragon, but when the bloodthirsty sword absorbed those dragon souls into the blood-colored space just now, the skeleton dragon relied on its powerful soul to attack those dragon souls.

In this way, those dragon souls stopped doing it, and they all surrounded the skeleton dragon and launched an attack on the skeleton dragon's soul.

Although the soul of the skeleton dragon was ten times stronger than before, it was still a little difficult for the skeleton dragon to face the souls of these twenty dragons.

Seeing this, Xue Yi smiled indifferently, and his soul once again turned into a hundred-meter-tall golden giant, punching and kicking, stopping ten dragon souls. As for the remaining ten dragon souls, they were handed over to the souls of the skeleton dragon to absorb.

Now that there are only ten dragon souls left, the skeleton dragon is much easier, and it only took less than an hour to devour and absorb all ten dragon souls. The skeletal dragon has doubled in size compared to before. Then Xue Yi released the remaining ten or so dragon souls to the skeleton dragon.

This time, the skeleton dragon was more relaxed, and it only took about forty minutes to absorb all the remaining ten dragon souls.

The soul of the current skeleton dragon is hundreds of meters long, and its wings are more than 100 meters wide, which looks extremely spectacular.

Xue Yi said to the Skeleton Dragon: "At this time, it is daytime outside, I will go to rest and cultivate, and you will compress and refine your soul in the blood-colored space." "Although the soul of the skeleton dragon is huge now, it needs to be compressed and refined because it has absorbed the souls of thirty dragons, some of which are too complicated.

The skeleton dragon didn't say much, and immediately began to compress and refine the soul. Xue Yi turned into a golden light, exited the blood-colored space, returned to his body, and then began to cultivate. When it was late, Xue Yi grabbed another thirty dragon souls and entered the space.

And so on for a month.

A month later, in the blood-colored space.

The skeleton absorbed more than 900 dragon souls, and its soul had become very powerful, and then these dragon souls were compressed and refined, and then the skeleton dragon's soul was still more than 500 meters long. Such a huge dragon soul, if placed in the outside world, is definitely very amazing.

Xue Yi said to the skeleton dragon, "Brother Long, let's go out." With a flash of golden light, Xue Yi's soul had returned to his body.

And the skeleton dragon also flashed with black light, reattached to the skeleton.

On top of that skeleton, a raging flame burned again. However, this time, unlike before, the flames did not remain in their original state, but suddenly began to spread. The front and back are getting longer, the left and right are getting wider and wider, and the top and bottom are getting taller and taller.

In just a moment, the Skeleton Dragon has been turned upside down.

At this time, the skeleton dragon reached a length of fifteen meters, a height of more than seven meters, and its wings spread out to ten meters. It evolved!

A fifteen-meter-long dragon covered in flames, this momentum has multiplied several times compared to before.

Xue Yi saw it and was overjoyed. After absorbing too many dragon souls, the skeletal dragon finally evolved again and reached adulthood. Moreover, the average adult dragon is only more than ten meters long, but the skeleton dragon has reached fifteen meters long, which shows that the combat power of the skeleton dragon is stronger than that of the average adult dragon. In terms of soul, the Skeleton Dragon is the one that completely destroys all adult dragons.

The ice dragon next to him felt the temperature on the skeleton dragon's body, and he was a little uncomfortable. After all, it is an ice attribute, and fire is its nemesis, even if its strength is much stronger than that of the skeleton dragon, it is still not very adaptable. It took a few steps to the side and shook its head.

And the purple electric Tyrannosaurus rex curiously flew up and down around the skeletal dragon, occasionally teasing the skeletal dragon with its tail. The first thing that a battle maniac can think of is naturally fighting. Now that the Skeleton Dragon has evolved, it is natural to have a fight with it to see if its combat effectiveness has improved.

Just as it teased again, the skeleton dragon's tail wrapped its arms around its neck, and it slammed into the air and slammed it to the ground. The force of this fall was extremely strong, and it made the purple electric Tyrannosaurus rex seven meat and eight vegetarians.

Xue Yi's face, which had not shown a smile for a long time, finally appeared a little smile at this time. Then he looked up at the grassland in the distance, and saw that under a round of silver moon, there were only forty or fifty dragon souls flying in the sky above the grassland, which seemed much more deserted than the previous thousand dragons dancing.

The skeleton dragon flew straight towards the four kings and ten dragon souls, and as soon as its body spread, its body was covered with a layer of black mist, and soon the skeleton dragon disappeared into the black mist. This black fog grew bigger and bigger, and after only a few moments, this black fog was hundreds of meters in diameter.

Then the black mist surrounded those dragon souls.

Since this black mist was also a soul body, those dragon souls had no defense against it at all, and were directly engulfed by the black mist. At this time, a scream came from the black fog, but it was too late. In just five minutes, the forty or fifty dragon souls were all devoured and absorbed by the skeleton dragon, and then the skeleton dragon's body was revealed, and it seemed that the skeleton dragon had grown in a circle.

And at the moment when the skeleton dragon engulfed all the dragon souls, the entire grassland suddenly changed.

I saw that at the foot of the Four Emperors Mountain, a faint fire-red barrier appeared at the same time. This was the barrier that prevented the dragon soul from invading the Four Emperor Mountains before.

This fiery red barrier connected and enclosed the entire grassland within a radius of fifty miles.

Then the fiery red barrier gradually became more and more intense, and at last, the barrier gradually turned into flames. The flames spread, swept over the entire grassland, and finally formed a fireball with a diameter of hundreds of meters in the center of the grassland. The fireball hung over the grassland like a sun, getting hotter and hotter.

Xue Yi could feel that in that fireball, there was a huge amount of energy that he had never seen before. If this fireball were to be detonated, it would destroy all living things within a radius of 100 miles.

In the end, this fireball turned into a huge phantom of the Fire Emperor's Fire Immortal, and said to Xue Yi: "Congratulations, young man, you have subdued all the dragon souls and obtained my core combat power. Hahahaha......"

With the laughter of the Fire Emperor, the huge fireball began to dissipate, and in just half an hour, the fireball disappeared to a diameter of less than a meter.

Xue Yi wondered in his heart: Didn't you say that I had obtained the core combat power?

Just when Xue Yi was puzzled, he saw that the remaining fireball with a diameter of less than one meter had dissipated, and in the center of the fireball, there was a fist-sized fiery red ball of light.

Xue Yi was overjoyed in his heart, stepped on the back of the skeleton dragon, and held the fiery red ball of light in his hand.

As soon as this ball of light was in his hands, Xue Yi felt very similar to the feeling of holding the Fire Dragon Sword, Xue Yi's heart moved, and he immediately flew to the Ice and Snow Dragon. (To be continued......)