Because if you want to cultivate three generations of Gu Kings, the second generation Gu as a material, the level must reach 10 stars to be eligible.

Therefore, Gu Xuan can put it into the third layer of the tree hole, and now there are only 600,000 Flying Sword Gu, 150,000 Death Explosion Gu, and 470,000 Spirit Breaking Gu.

As these 1.22 million second-generation Gu were sent into the three-story tree hole, a fierce aura suddenly rose from the body of each second-generation Gu.

However, although there was a ferocious aura rising from the bodies of these second-generation Gus, they did not immediately start fighting and devouring each other, but just screamed in place frantically.

'Please add the main Gu refining material' (The stronger the Gu refining main material, the second generation Gu that devoured the Gu refining main material, the stronger the talent and ability of the three generations of Gu Kings that were decided.) ）

'Please add the number of second-generation Gu used in Gu refining, at least 10% of the amount of gold-devouring Gu vitality, as a catalyst' (The gold-devouring Gu with god-level devouring is the key catalyst for the fusion evolution of Gu worms, the more gold-devouring Gu used, the stronger the potential of the third-generation Gu King.) ）

Gu Xuan, who had already tried Gu refining before, naturally knew these two conditions.

Therefore, he has also prepared the two materials needed in advance.

The so-called Gu refining main material is naturally the more powerful the lifeform, the better.

And Xiang Ding, the Demon Corpse Clan, who was previously controlled by Gu Xuan with 10 sub-mother Gus, as the most powerful lifeform in this Yuanwu world, has broken through the existence of the peak of the ninth-order martial sect, and there is no doubt that it is the strongest material that Gu Xuan can come up with now.

As for the vitality of the Gold Devouring Gu, this is also a very simple matter, you only need to extract the vitality in the body of the Gold Devouring Gu and inject it into this third layer of tree holes.

The 10% ratio of 1.22 million second-generation Gu is that at least 122,000 Gold Devouring Gu are needed as catalysts.

However, when Gu Xuan first tried to refine the Gu King, he noticed it at a glance, and what was said in this hint was at least.

In other words, 122,000 Gold Devouring Gu is the most basic requirement, if the conditions permit, the more the better, the more you invest, the greater the potential.

Therefore, Gu Xuan, who was planning to exploit the loopholes of the Ten Thousand Realms City in his heart, happened to take the opportunity of this refining Gu King to turn all the seven million Gold Devouring Gu into vitality and inject them into the tree hole of the third layer.

1.22 million 10-star second-generation Gu + Demon Corpse Xiang Ding that surpasses the ceiling of Yuanwu World's combat power + seven million gold-devouring Gu turned into vitality and injected into it, what kind of Gu King will be refined, Gu Xuan is also looking forward to it.

Along with Gu Xuan's Demon Corpse Xiang Ding, the vitality light points transformed by the 7 million Gold Devouring Gu, all of them were sent into the Gu King Tree Cave on the third layer.

The 1.22 million second-generation Gus, who had already been hungry and thirsty, were like hungry tigers out of the cage, fiercely pounced on the demon corpse Xiang Ding in the center of the tree hole.

And Xiang Ding, the demon corpse controlled by Zi Gu, didn't even make a trace of resistance, so he let himself be eaten by many second-generation Gu.

The second-generation Gu who had eaten the demon corpse Xiang Ding had obtained the evolutionary energy that other second-generation Gu did not have, and they began to change rapidly.

Then, these second-generation Gus who were one step ahead rushed towards other second-generation Gus who were not weaker around them, and quickly gained more evolutionary energy.

These second-generation Gus who were one step ahead tacitly did not attack other second-generation Gu of the same level at this moment, but were frantically grabbing food.

Under the encirclement and suppression of these second-generation Gu who were one step ahead, the number of 1.22 million second-generation Gu was soon only more than 8,000.

Without any hesitation, the remaining more than eight thousand second-generation Gu went towards the other second-generation Gu around him again.

Eight thousand... Five thousand... 3,000 ...... 900 ...... Two hundred... Thirty of them... Five!

In this third-layer tree hole, these second-generation Gu who had already killed madness did not stop for even a second, either in the fight or looking for a target.

After such a brutal and fierce battle, soon in the entire third-layer tree hole, there were only five quasi-Gu Kings left who had changed their appearance greatly.

These five quasi-Gu kings, judging from their appearance at the moment.

A body as black as ink, shaped like a dragon, surrounded by dense sword scales like a hedgehog, the head and tail are all composed of sword scales according to a certain law.

One has a yellowish body and a bulging belly, but it looks like a three-legged golden toad, but its appearance is much better than that of a golden toad, at least it looks much smoother, without that pimple skin.

A gray one, looking like a hairless orangutan, without a single hair on its body, and two eyes without the whites of the eyes, all black pupils.

In terms of Gu Xuan's aesthetics, it is really ugly to the extreme. Its only characteristic may be that it has a thick but flexible tail.

One looked a little like the Demon Corpse Xiang Ding, looking like a praying mantis with dragon wings and claws.

The last one, with armor-like armor and scales, and a pair of huge compound eyes on the left and right sides of the top of the head, is 9 points similar to a human.

After each defeating each other's competitors, and then eating and resting for a short time, the last five quasi-king Gu continued to entangle themselves without hesitation and fought each other.

The quasi-king Gu like a sword dragon, when his body twisted around, it brought a burst of wind to the sound.

With the sharpness of the sword scales around his body, he will be injured when he is next to it, and once he is strangled and entangled by its special skill, he will be twisted to pieces in an instant.

The three-legged golden toad-shaped quasi-king Gu, with its bulging belly, was protruding from it as mucus as if it were cannonballs.

These mucus, once collided, will immediately explode into extremely toxic and corrosive.

The ugly eight monsters like hairless orangutans were hit by the three-legged golden toad at the first moment of the war, and half of their bodies were melted into juice when they fell to the ground.

The dragon-winged mantis is as agile as the wind, and a pair of claw blades are extremely sharp, which can compete with the sword dragon head-on.

And the last one, the humanoid quasi-Gu King with a pair of huge compound eyes on the top of his head, was like a flea, constantly approaching the three-legged golden toad quasi-Gu King between the left and right.

In the end, after a desperate battle between each other, the sword dragon defeated the dragon wing mantis, swallowed the dragon wing mantis into the stomach, and after a short rest, the back of the sword dragon grew a pair of sword wings like a sword screen, and four sword claws also grew on the abdomen, and the strength immediately increased.

And the humanoid quasi-Gu king with huge compound eyes, after rushing through the cannonball blockade of the three-legged production reduction quasi-Gu king, blew up the head of the three-legged golden toad quasi-Gu king with one punch.

After devouring the three-legged golden toad Gu, this humanoid Gu King with huge compound eyes became at least half fat, from a thin man to a huge fat man.

Soon, this sword dragon and the compound eye fat king collided and fought together again.

In this battle, both sides fought until they were exhausted and each other was injured, and then the two sides each took half a step back, staring at the opponent fiercely, and at the same time, they grabbed the strength and injury to recover.

However, just when Gu Xuan saw the essence and felt that his first Gu King would inevitably arise between this sword dragon or compound eye monster, two quasi-Gu kings.

As soon as the battle started, he was hit by the three-legged Golden Toad Quasi-Gu King, and the hairless giant-tailed quasi-Gu King who melted half of his body suddenly pierced the chest of the fat-eyed quasi-Gu King with the giant tail behind him.

Without waiting for this compound-eyed obese quasi-Gu King to resist, the giant tail squirmed, and only a layer of crumpled dead skin was left behind it.

After absorbing the fat-eyed Quasi-Gu King, the hairless Giant-tailed Quasi-Gu King's injuries recovered at a speed visible to the naked eye, and transformed from an ugly hairless orangutan form into a burly muscular monster like King Kong.

In the end, the Giant Tail Quasi-Gu King, who had turned into a muscular monster, tore the Sword Jiaolong into more than a dozen sections at the cost of being seriously injured and dying, and won the final victory of this Gu refining.

After sucking the corpses of the Sword Jiaolong one by one, a large amount of mucus erupted from the body of the Giant Tail Gu King, and then the slime quickly hardened, turning it into a round cocoon.

Next, the 7 million Gold Devouring Gu will be converted, each of which has a trace of god-level vitality with it, and it will slowly and continuously merge into this round cocoon.

'Gu King Hatching Countdown: 15 hours, 23 minutes and 18 seconds'

When this Giant Tail Gu King transformed into a round cocoon and the vitality of the Gold Devouring Gu began to increase it, Gu Xuan's eyes flashed in front of Gu Xuan's eyes the time it would take for this Giant Tail Gu King to hatch.

According to this time, by the time the Giant Tail Gu King hatched, he would definitely be in the Ten Thousand Worlds City.

The Giant Tail Gu King at this stage can only be regarded as a cocoon that can't move the slightest bit at most, and it must not be calculated as combat power, and even if it is calculated, it will definitely be much, much lower.

And in order to cultivate this Giant Tail Gu King, Gu Xuan's combat power at the moment had fallen to the bottom, leaving only the last 1 million Gold Devouring Gu, as well as 30,000 10-star second-generation Gus, and 100 5 second-generation Gus.

Entering the City of Ten Thousand Realms in this state, his evaluation will definitely not be too high.

And once Ten Thousand Worlds City sent Gu Xuan to a world that matched his combat power at the moment, he relied on the 1.5 billion resources in the Gu Nest and the Giant Tail Gu King that had hatched, he was afraid that he would be able to sweep through that world in an instant, sweeping away all the resources that could be obtained.

Moreover, if the first time is feasible, then the second time can completely suppress his own strength again when he returns to Ten Thousand Worlds City, so as to gain a crushing advantage and sweep away massive resources.

The reason why there is this speculation is actually thanks to Gu Xuan's novice instructor.

It was precisely because he sighed several times that when he first saw Gu Xuan, Gu Xuan's combat power was already completely inconsistent, this world of novice trials.

This made Gu Xuan make a series of guesses and plans.

'The Novice Trial is over, congratulations on your qualification to enter the City of All Worlds, you will be entering the City of All Worlds in 3 seconds, please get ready. ’

The Giant Tail Gu King was hatching, and Gu Xuan's combat power had fallen to the bottom again, so he was naturally honestly finished, and there were only a few hours left in the novice trial.

With the end of the 3-second countdown, Gu Xuan's consciousness suddenly went into a trance, and then he disappeared from this Yuanwu world and left, heading for the City of Ten Thousand Worlds.