Guo Teng asked this question to Uzi, and Uzi smiled again.

"The answer to this question is the same as before. If you pay enough attention to skeleton soldiers, I think you will understand."

"I can give you the answer now, but you have to promise me that when you go back, you will observe the skeleton soldiers by yourself, okay?"

"Okay."

Guo Teng nodded.

Only those who love me can see my soul clearly.

This is something more reliable than loyalty and friendship.

Uzi can see his soul clearly, which means that he is extremely friendly to himself personally.

He will not deceive himself or make detours.

Since he demands this of himself, he will definitely study the skeleton soldiers later.

"The color of soul fire represents their journey."

"This process includes their experience, consciousness, feelings, skills and many other things."

"For the undead arms, journey is an extremely important thing."

"When their experiences accumulate enough, they will change from barren blanks to gorgeous colors."

Uzi waved his hand, and the dust on the ground floated up and gathered on the table in front of Guo Teng.

The condensed dust element formed two skeleton soldiers.

Two skeleton soldiers chopped and fought in front of Guo Teng, cutting off the enemy's bones and spine.

The winner knelt down on one knee, put his skull against it, and absorbed the soul fire that had not dissipated from the dead skeleton soldiers.

The dead body melts into the earth.

The living absorb the nutrients of the world.

Guo Teng could see that the body of the skeleton soldier that Uzi demonstrated for him had grown slightly, and the soul fire was also changing to green.

When the skeleton soldier in front of you absorbs enough soul fire from other skeleton soldiers, the green color of the soul fire changes in a certain direction.

It dug a big hole and buried itself deep in the earth.

After a while, the skeletal arm rose from the ground and pointed directly at the sky.

Skeleton soldiers who have advanced to skeleton warriors emerge.

The body became bigger and stronger, and the soul fire returned to white.

"Is this the evolution of skeleton soldiers?"

"Must we plunder the soul fire of other skeleton soldiers, or should we say the process?"

"Can I directly inject the process into the skeleton soldier to advance it?"

If we compare it to a game, Guo Teng thinks that the skeleton soldiers have killed enough monsters and gained experience that can be upgraded.

When the experience exceeds its experience tank, it has to advance involuntarily.

Just like it emerged from the soil.

Guo Teng grabbed the evolved skeleton warrior in his hand, put it on the table and beat it several times.

The 'little' skeleton warrior made from dust could not resist the 'huge' Guo Teng's tricks, and was shattered in Guo Teng's hands.

Realizing that he had made a mistake, Guo Teng quickly pushed the ashes to the ground, blinked, and continued to ask Uzi.

As a soul lich that has lived for more than two thousand years, it naturally understands what Guo Teng means.

Guo Teng wanted to take a shortcut and artificially control the skeleton soldiers to advance.

"Of course."

"Why not?"

"When many undead nobles are idle and bored, they will choose skeleton soldiers to induce advancement, so that they can get unexpected benefits."

Guo Teng didn't pay attention to what Uzi said next.

Uzi's previous words made Guo Teng realize that skeleton soldiers can induce advancement.

This means that other undead troops can also be induced to advance.

As long as the journey is enough, they can advance from 1 to 2, 2 to 3, and so on, and continue to advance.

Guo Teng can already see that he has gradually advanced the skeleton soldiers to level 9.

"If you want to mutate your skeleton soldiers, you need to know these things."

Uzi looked at Guo Teng's expression and knew that Guo Teng was imagining a skeleton soldier gradually advancing to the middle level, then to the high level, becoming an elite, a lord, and an undead noble.

It would be okay if things were that simple.

But in fact, there are many limiting factors for the mutagenesis of undead troops.

"First of all, please remember the type of your undead troop."

"The journeys of different undead arms are different."

"You can't instill the history of the animal-shaped undead soldiers into the soul fire of the human-shaped undead soldiers."

"This will lead to errors in the understanding of the undead arms and the collapse of soul fire."

"Similarly, the journey of the bone-like undead troops cannot be instilled into the soul fire of the flesh-and-blood or ghost-like undead troops."

Guo Teng nodded and remembered this piece of information.

"Secondly, the process can only be at the same level, or the lower level can support the upper level, but the upper level cannot support the lower level."

"If the superior supports the subordinate, it means that this undead unit will be replaced by the superior undead unit."

"But the journey of the upper-level undead arms is too huge and exceeds the body capacity of the lower-level undead arms. Then the body of the undead arms will collapse."

"A huge soul requires a huge body to carry it."

"If either of them deviates, it means that either the soul or the body will collapse."

Uzi's words made Guo Teng feel very lucky.

Copying the soul fire of Unit 1 and the Master Chief and instilling it into Moss's soul fire did not cause its death, but caused its advancement.

"And..."

Uzi told Guo Teng a lot of things to note about how to mutate and advance low-level undead troops.

He also told Guo Teng the precautions on how to mutate and advance advanced undead troops.

Of course, what he talked about was not just the precautions for the mutagenesis and advancement of the undead arms at the low, middle and high levels.

There are also things to note about the integration of arms.

For example, the cavalry-type undead arms.

How to make a skeleton soldier ride a skeleton horse and become a skeleton knight.

How to add flesh and blood to skeleton soldiers to make them walking zombies.

Or take out the soul fire of the skeleton soldiers and induce them to become ghosts.

In addition to these, Uzi also told Guo Teng how to add elements, arcana and other attributes to the skeleton mage after the skeleton soldier advanced to the skeleton mage.

How do walking dead become zombies, and how do zombies become abominations.

Or how can a zombie be wrapped in a bandage and turn into a dead guard? How can a dead guard put on a wolf totem and become a death waiter?

How do ghosts turn into resentful spirits, how do resentful spirits absorb resentment and become evil ghosts, and how evil ghosts add self-gender recognition and become ghost brides, etc.

Uzi, like an academician-level professor in the university, kept telling Guo Teng about the various changes, evolution, mutation, etc. of the low-level undead arms.

Guo Teng, a scumbag, was fascinated by what he heard.

He could only understand the superficial things that Uzi said.

Uzi talked about many deep principles, but he didn't have the corresponding knowledge and couldn't understand them.

He couldn't understand that it didn't matter, Leah could save all Uzi's stories.

When he buys the relevant spell books and imports the knowledge into his mind, he can understand and absorb Uzi's knowledge.

Uzi talks eloquently and doesn’t stop for a drink of water.

It wasn't until Reputation reminded Guo Teng that Guo Teng stopped Uzi from telling the story.

The time flow rate between the underworld and the real world is 1:3, so he can't stay here for a long time.

Moreover, there is no concept of time flow in the Netherworld.

If the reputation hadn't reminded him, he had been listening to Uzi's talk for more than 2 days, which was close to a week in the real world, and he would have continued to listen to Uzi's talk.

Uzi has been a soul lich for more than two thousand years, so you can imagine how huge his knowledge reserve is.

If you continue to listen to Uzi and Guo Teng, you will probably be able to hear the player coming to this world.
To be continued...