The world of the Underworld is moving at a fast pace.

Under Qin Fei's control, this piece of underworld was like a time accelerator, constantly evolving and developing.

All this is due to Qin Fei's control of the "door".

Sure enough, in different worlds, the speed of time is very different, and this ratio, as the master of the world inside the door, is naturally in Qin Fei's hands.

Qin Fei can control the time flow rate of the Underworld world, and naturally he can also control the time flow rate of the player world, but the current ratio of that place is still one to one, and it will be opened next time.

He will give this gift to this group of players who have put in their own efforts.

The door is still a very mysterious existence.

Qin Fei wanted to communicate with it countless times, because he felt that this door must have its own consciousness, but he could only accept the information when the door wanted to give him feedback, and most of the rest of the time, Qin Fei's problem was like a stone sinking into the sea.

···

In a flash, more than ten years have passed.

Cruise's skeleton empire is almost taking shape, relying on a large group of skeleton commanders and skeleton generals who make cattle and horses for him, he has not only successfully evolved to the bloodline level of the skeleton marshal, but also has stabilized his realm.

He is currently working towards the goal of the Skeleton King.

In addition, in the past ten years, Cruise has also carefully studied the secret book left by Qin Fei, which records countless conjectures about the profession of necromancer.

According to the class division given by Qin Fei, he had also reached the level of a fourth-order necromancer.

This is still because of crossing the river by feeling the stones, if there is a complete necromancer growth system, Cruise may have become a sixth-order, seventh-order necromancer, this is his unique talent.

The skeletons that evolved in the same batch as him were nowhere near as fast as that.

Brooke, who took the route of body strengthening, only evolved to the level of a skeleton marshal.

As for the rest of the skeletons, they basically hover at the level of skeleton leaders and skeleton generals.

At this point, the power of the skeleton clan in the underworld has been basically finalized.

Cruise guards his skull hall, with this as the center, occupying a large area of land around it, and there are countless skeleton legionnaires under his command. Brooke relied on his unrivaled heads-up ability to conquer many Skull powerhouses by force, and also subdued a group of subordinates, taking root in the east of the Cruise Skull Empire.

Because of the body strengthening route, Brooke's body is unusually huge, with a height of more than ten meters, and even in order to improve his combat effectiveness, he also used a part of his body to smelt and make an eight-meter-long bone spear.

In terms of heads-up ability, ten Cruise is no match for Brooke, and once Brooke rushes to his side with a charge, Cruise basically loses the ability to resist.

So Bruce, who knows this very well, will not give such a chance at all.

Only by surviving can you become strong, and only Gou is the only way to become strong.

Cruise has a piece of heaven, Gou, is the first rule of the undead world that Cruise believes in.

But in the skeleton clan, no skeleton dares to despise this skeleton mage, the suppressive power of the bloodline is irresistible, and Cruise, who is already a skeleton marshal, just releasing the coercion of the superior is enough to make most of the skeletons lose their combat effectiveness.

Under his command, there are countless war machines, which have been transformed by Cruise himself, replaced with new body structures, and obtained new combat abilities, among the skeletons of the same rank, the possessor has the ability to crush them.

And now.

The Skeletons have a new friend of their own.

Skeleton Dog.

Everyone is a skeleton family, so they naturally have to get along in harmony, so it is expected that such a situation will occur.

Before the newly-born skeleton clan could grow, it was divided between Cruise and Brooke in half and half, and they were taken under their own command.

This is the hospitality of the skeletons, absorbing everything they can absorb.

As the saying goes, everything can be skeletonized.

Only by embracing all rivers and accommodating all things can we become strong.

Now Cruise has the potential to be an evil scientist.

Qin Fei left him the secret book of the necromancer, yes, it is the secret book of "Five Years of Wizards, Three Years of Simulation".

There are also many evolutionary conjectures about the undead race.

After this part was seen by Cruise, he was immediately shocked, and he couldn't wait to bow down to Qin Fei who gave him this secret book.

The core idea is that everything can be skeletonized, which also leads to one more problem with Cruise, and from then on, when he sees any new creature, he always wants to skeletonize people.

The skeleton race should actually be a huge race, and it shouldn't just be a humanoid skeleton.

It's just that in his life, Cruise has never seen any other creatures in the underworld except for the Ghost Clan and the Butcher Sothos Clan.

Seeing the height of limiting thinking, even if Cruise optimizes his race, he can't break through the limitations of the humanoid structure.

Now, the appearance of the Skeleton Dog, like the finishing touch, inspires Cruise.

Huge fangs, hard, sharp bone spurs, and walking on all fours are all great inspirations for this evil scientist.

In order to expand the skeleton family, Cruise is racking his brains to conceive a new skeleton design structure.

From under his command, many strange forms of troops came out.

For example, the dog-headed kobold, the three-headed skeleton dog, and other species with practical value, while other designs that failed, were swept into the garbage heap of Cruise.

From God's point of view, Qin Fei has been silently observing the operation of the laws of this underworld.

In the entire underworld world, only the 100 square kilometers of the demarcated land can be perfected, and in other places, there are obvious bugs, that is, law defects.

This is the reason why no matter how hard Cruise tries, he can't create a new race, the space he is in, the laws of heaven and earth are flawed, and even the perfect physiological structure can't ignite that fire and bring it back to life.

In principle, only the world in which the player is located can give birth to a new undead species, and the realm where Cruise and Brooke are located can only optimize their own racial ancestry at best, but no new rules can appear.

The player's world is like an incubator, complementing the laws of this world, allowing it to reproduce the free evolution of species, and breathe vitality into the world of the underworld.

And this is precisely the reason why Qin Fei has deliberately created such a place.

The underworld is like a pool of stagnant water, without the injection of an external source, thousands of years have passed, and it may still be the same.

Therefore, Qin Fei was also speculating about why humans in the real world were able to bring so much change to the underworld?

How could he be an ordinary human being at the beginning, how could he open this door?

I have never been able to explore this underworld that has given birth to countless undead worlds, what is the reason?

"Could it be that this underworld is inextricably linked with the humans of the ancient era?" Qin Fei suddenly thought of a point.

The Three Emperors and Five Emperors, the Three Schools of Confucianism, Buddhism and Taoism, in these thousands of years of human history, what kind of secrets are contained in them.

This is also a problem.

A fundamental question related to Qin Fei.