The world tree needs tree guardians.

So when Tesla wanted to leave here and hand over the responsibility of tree guardians to the newcomers, it launched a series of programs to let the World Tree automatically select qualified people from it.

Many candidates came to Tesla, and only three people were qualified to eat the fruit in the end, Alex belonged to the third person.

"I'm the third person?" Alex asked.

"Yes!"

"How are the two people in front?"

"They put forward new ideas and development directions, but unfortunately they can't develop in the bud, because of insufficient energy, or there are loopholes in the energy circulation system, and the power consumption loss is too large. Once they fail, they will wither and die as new branches, and they no longer exist in this world tree."

After hearing Tesla's words, Alex finally understood that this was the moment of his life and death. Once he took the wrong steps, not only would he die, but even the universe he was in would no longer exist.

Alex put his hand on the trunk of the Tree of World, closed his eyes and sank into his mind to sense the universe he was in. He immediately saw the internal situation of the entire tree. He first saw the branches of the tree, then saw the cells of the tree, and then saw the universe that made up the cells.

According to the information obtained by eating fruits, every three thousand small universes circulates a universe, every three thousand universes circulates a large universe, and every three thousand large universes circulates an ultimate universe, and every three thousand ultimate universes form a world tree cell.

After locking in the universe he was in, he saw people he knew, parents, brothers and sisters, relatives and friends, and other people he knew and did not know, who were busy and peacefully living without knowing anything.

"Have you thought it through?" Tesla asked softly next to him: "What are you finding a way to allow the universe you are in to develop different branches of civilization, and then influence the World Tree and continue to develop."

"I've thought about it!"

"Oh? What's the way?"

"You are a tree guardian, so you should know what the Moon Demon relies on to survive, right?" Alex closed his eyes and his hands did not leave the trunk. While observing the people on Earth, he explained to Tesla: "As species that invade the World Tree, they themselves cannot directly absorb cosmic energy, but they can extract raw materials and turn them into their own energy. A small part of them even leaked out and became the source of mysterious power."

Tesla touched his beard and understood a little bit what Alex was talking about. He knew that the mysterious power referred to in that world actually came from the crystal energy contained on the moon. As for the crystal on the moon, it was actually the diamond-shaped crystal on the forehead of the moon demon. When the moon demon died, it would leave the crystal.

Each piece of crystal has huge energy, which was transformed by the Moon Demon when he devoured human souls during his lifetime. If you look at it from this perspective, Alex has indeed found a path, a path that can have endless energy.

That is the human soul!

The soul itself cannot be used directly as energy, but it can be processed as raw materials and then become huge energy. Human reproduction is endless, and many people die and are born every year. If the soul can also serve as a source of energy, there will be no possibility of exhaustion.

But there are still big problems here, a huge problem exists! Before this, no one thought of using human souls as a source of energy.

"Your idea is very good, but I'm a little unfavorable! You won't know! If you want to deeply process the soul and make it energy, you must have very advanced instruments! Or tools. When it develops to the end of the Shinto civilization, they can also directly process the soul and become energy, but that is only when they have the divine nature."

Tesla was walking and said, "If you use Shinto methods to cultivate the divine nature, then your branch is no different from Shinto branches. Doing so will not be recognized by the World Tree. If you do not use Shinto methods, you will be stuck in the initial stage and you will never be able to refine your soul. Even the branch of science and technology civilization I established has not reached this level so far!"

Finally, he concluded: "So, your step is too big! It's not realistic enough!"

Alex didn't seem panicked when he heard this. Instead, he smiled: "I also know that the start of any civilization is very important. If it cannot develop at the beginning, no matter how beautiful the prospect is, it will be useless. Just like a scientific and technological civilization, it also requires oil, natural gas, and nuclear energy as a transition to develop. I believe these resources were also buried by you at the beginning."

Tesla nodded, expressing his acknowledgment of Alex's speculation.

"In the world before I was reborn, I had come into contact with a fantasy novel that describes a civilization. This civilization is called rune technology and looks very scientific, but it cannot explain where the rune technology's energy comes from."

The more Alex said, the more excited he became. He said loudly: "At the same time as here, I guessed it vaguely! The energy of rune technology actually comes from humans themselves, the spiritual power of human beings, or the soul is used as fuel!"

When Tesla heard this, he couldn't help but say: "But you have not explained clearly how to make human society go beyond the first few steps to have the soul refining as energy!"

Alex opened his eyes and looked at Tesla with a smile and said, "Actually, you have known how to solve this problem for a long time, but you have not started to implement it. Instead, you want to wait for us candidates to think about it!"

"Oh? How do you say this?"

Tesla also smiled. He was really happy. Finally someone understood the prompt he left. After the technological civilization reached its peak, he was already considering how to develop the next step. However, at that time, he was already determined to break away from the connection with the Tree of the World and remove the responsibility of "tree protection man".

So after carrying out the candidate plan, he interfered in the selection process with purpose. All candidates will encounter the content he set during their experience, so as to prompt these candidates to finally find a new path. He cannot tell the candidates directly, and the prompts given are mostly obscure.

But even if you do this, not many people can understand it.

Fortunately, Alex reacted quickly. After entering this space, he was thinking about Tesla's purpose and what Tesla would do. And when thinking about the game, there were always some clues and prompts when doing tasks. Whether it was manuscripts, key codes, or other items, he carefully considered the meaning of these things.

When everything was clearly presented to him, one of the special things seemed very eye-catching, that was the moon demon diamond crystal!

Such a crystal is in hand. Alex does not think it was obtained by chance, but has a special meaning. He and Valentine can travel through the first space and enter the second space, relying on the energy of the Moon Demon Crystal. If every step he takes is set by Tesla and the crystal is only used as a small prop, there is no need to spend so much effort.

After realizing the special features of the Moon Demon Crystal, Alex concentrated his mental power on this crystal and began to carefully study its function. Soon, he came to a conclusion: "The crystal is the tool used by the Moon Demon to refine human souls! It is equivalent to something like a divine character, but it is not a divine character!"

It is a semi-living substance!

When the moon demon dies, his body will rot and return to heaven and earth, but the crystal can remain active because of its special nature. It constantly radiates mysterious energy outward until its own energy is exhausted.

"Crystal!"

Alex used his mind to control the crystal to levitate in front of the two of them. The crystal was emitting waves of fluctuations. Originally, Alex could not see these fluctuations, but after he ate the fruit, he had power that was comparable to gods. Whether it was divine power, magic power, or refining arrays and technology, there was no secret in his eyes.

"Very good, you found the effect of crystals." Tesla nodded and praised, "What are you going to do? If you want to refine soul energy through crystals, you can try designing an energy circulation system to see if the Tree of World can accept it?"

At this point, Tesla still did not reveal the answer, but let Alex explore and try. This kind of attempt is not without cost. Every change in Alex will touch on the basic rules of the universe. Once the change is too large, and if the energy circulation system is defective, it will naturally be judged by the Tree of Worlds.

These key points were already very clear when Alex ate the fruit. He did not adjust immediately. Instead, he simulated it in his own spiritual space, trying to design a perfect energy circulation system.

In the spiritual space, the crystal appeared in Alex's hands.

Now Alex has been able to project himself into the spiritual space and have his own spiritual body. Since eating the fruit, the spiritual space has received huge energy injection, forming a real space, a space as vast as a galaxy.

In this space, he can do the same thing as the Creator, and can create any object or life at will.

As long as these things follow reasonable logical laws and there are not much loopholes in their energy and material cycles, they are things that can truly exist.

In order to practice, Alex did not immediately transform the crystal, but looked at the distance. In his sight, fertile land appeared, green life grew rapidly, then mountains rose, clouds and fog rose, and lightning appeared. Finally, various animals and plants appeared out of thin air, some looked similar to life on Earth, while others were fantasy creatures.

With a thought, the time in the entire space seemed to be scattered for tens of millions of years. The earth and the sky were changing rapidly, and life on the earth was evolving. All this was carried out on a circular earth, which was suspended in the void, and the sun, moon and stars were circling around it.

"Well, I probably mastered some skills!" Alex thought to himself that things in the space had passed very much, but for him, it was only a minute or two.

"Let's see what this crystal does!"

He looked at the crystal in his hand. As he watched, the crystal gradually changed into a sparkling seed. A tangible and untangible seed flew up in the air, looking down at this disc-shaped continent, looking for a suitable target.

Finally, he chose an animal that looked smarter, and with a flash of his finger, the seed flew into one of the animals' bodies.

At this moment, Tesla suddenly appeared in this space. He looked at the world with great interest and said, "It's a pretty good space. It seems that you have completely mastered your abilities."

He paused and continued, "But, why did you turn that crystal into a seed?"

Alex smiled slightly and said, "You'll know when you keep watching!"

After saying that, the time in space passed quickly, but the two of them had not changed at all, and they were like eternal things of existence.

A thought arises, thousands of mountains and rivers, and a thought disappears, and the world changes.

After countless eras, the animals implanted with seeds have been reproducing continuously. In the eyes of the two, a seed has become countless seeds, quietly silent in the body of that animal. When one of the branches of this animal accidentally obtained the stimulation of the seeds and evolved towards a higher level of life, a smart species appeared.

A new kind of intelligent life ruled this space. Each of them had a diamond-shaped crystal on their foreheads, just like the moon demon, but they were not the moon demon. At first, they also walked from primitive society through slave society and then entered feudal society and capitalist society, just like humans.

In this world, there is no buried oil and natural gas, and they cannot use other energy sources to promote social development. Because Alex does not want them to be too biased towards technological civilization, so whenever the social development trajectory deviates too much, he will intervene and reduce natural disasters to destroy the initially established scientific and technological civilization buds.

This ended several times in a row.

When seeing this, Tesla frowned and said, "If you continue to develop like this, you will not be able to obtain a large amount of soul materials to build the civilized society you want! Even if it is successfully established, it is equivalent to copying the social civilization of a creature like Moon Demon, but you cannot provide high-quality souls for them to develop!"

Alex shook his head and said, "No! After these experiments, I already know what to do! There is no need to refine energy by devouring the souls of other high-level lives. They themselves have this energy!"

As he said that, Alex stretched out his hand and pointed, one of the intelligent lives was enlightened and possessed some kind of cultivation technique. After practicing, this intelligent life gained more powerful power. Not only that, their own souls also changed.
Chapter completed!