Gu Yu was left alone at the scene, and the order he received now was to return by himself after the training was terminated, so without saying a word, he turned around and returned to Wutong Town alone.

Show your temporary pass and enter the town without any problems, then head straight back to your accommodation and lock the door.

Taking advantage of this gap, he is ready to turn into a star!

He sat down cross-legged on the bed, calmed down, adjusted his state to the best, and then closed his eyes and entered a state of self-forgetfulness, with all his attention focused on the internal nervous system.

Neurons are nerve cells, the basic units that make up the structure and function of the nervous system, each neuron is composed of cell bodies and protrusions, these axons form nerve fibers, and finally form a huge network structure.

The more in-depth human beings study, the more they find that their understanding of the nervous system is too superficial, whether from the appearance or from the operation of the law, the nervous system is in line with the law of the stars, the mystery of the universe.

Neurons are like stars, and neural networks are signal circuits, connecting neurons together to form galaxies, so to speak, the nervous system is the "microscopic universe" in the human body!

Therefore, the fundamental evolution of neurons is to light up the "main stars" in these galaxies, make them active, provide more majestic energy, and let the entire galaxy speed up with it, and the human body will gain the ability to surpass ordinary people.

The so-called apocalypse also contains the meaning of opening the sky, "heaven" is the universe, and the apocalypse is to continue to explore the microscopic universe of neurons, to understand and master the mystery of this universe, to control the sea of stars.

At this time, Gu Yu's nervous system was still largely misty, and it was difficult to perceive the scene in it, among which there was only a small gray area, and the neurons were faint and faint, like a few dark stars in the cloudy night sky.

Next, he lit up this first area, the main star of this area is called Wuqu, and the main martial arts are brave and resolute, which is the first necessary stage of the cultivation of the Spirited One.

And to awaken the stars, you have to infuse them with a kind of energy - dark energy!

Therefore, after the appearance of the dark demon, it promoted the awakening of human neurons, because the root of all this is brought about by dark energy.

Because of this, humans have developed dark energy reservoirs and placed them on temporary passes and apocalypse badges, which are convenient for the apocalypse to collect dark energy at any time and use it to light up neurons and stars when needed.

For the current Gu Yu, dark energy is certainly not a problem.

He first took out his temporary pass and looked at it, and there were only a few units in it.

This is also normal, the effect of the dark energy storage device developed by humans is limited, and it can only absorb about 10% of the dark energy in the dark demon's body, and when they followed Zhuang Yinyue and them before, they only killed dozens of dark demons, and the dark energy gained was very small.

It's no wonder that it is not easy for ordinary apocalypse to evolve, in addition to the lack of guaranteed hunting efficiency, another important reason is that the collection of dark energy is slow, so it often takes several times to go out to hunt to store enough of the required number of stars.

But Gu Yu doesn't have this problem, and again, the krypton gold system is awesome!

This bit of dark energy is far from enough, Gu Yu simply doesn't plan to use it, anyway, he will return the temporary pass to Gong Zheng tomorrow, and it will be very troublesome to find out that there is no dark energy at all, it is difficult to explain clearly.

This easily makes Gong Zheng wonder if he has lit up the stars.

Therefore, he simply put away the temporary pass and turned on the top-up system instead.

Although krypton gold also needs dark energy, but after all, turning into a star is a necessary program, so he has nothing to hesitate about, directly open the dark energy storage, carefully absorb the dark energy into the body, and infuse it into the Wuqu star, for fear of wasting a slight.

After consuming dozens of units of dark energy, he finally filled the Wuqu Star, only to see that in the gray nervous system area, a starlight flickered faintly, just like a star in the night sky.

As the Wuqu star shines, the surrounding nerve regions also shine, as if it is a nebula in the universe.

At the same time, Gu Yu's motor neuron evolution has finally reached 10%!

Gu Yu slowly opened his eyes and let out a long breath.

Fortunately, the difficulty is much lower than expected.

Of course, this is only the beginning, as we continue to evolve, the dark energy needed to light up more stars will only increase, and when the time comes, we will have to connect different nebulae to form the powerful armament of the Apocalypse - "Star Costume", which will only become more and more difficult.

But these are all later words, Gu Yu shook his head and put these thoughts aside.

Just then, there was a sudden knock on the door.

He walked over and opened the door suspiciously, and saw Yang Hao, Feng Song, and Luo Teng standing outside the door.

Seeing him open the door, the concerned eyes of the three of them came, and Yang Hao raised his voice and asked, "Oh, you scared us to death, and we didn't open the door after knocking for a long time!" What's going on inside? ”

Gu Yu smiled, he was so engrossed in lighting up Wu Quxing that he might not have noticed the knock on the door, but he didn't want to say it, so he just responded casually: "Maybe I slept too hard!" What's wrong? Worried I won't be able to open it? ”

"I'll just say you're not that fragile!" Seeing that Gu Yu didn't look depressed at all, Yang Hao was obviously a lot more relieved: "Captain, she can't wait to light up the first star, let us tell you that it's normal for newcomers to make mistakes, and everyone doesn't blame you." ”

Feng Song and Luo Teng didn't talk much, they just nodded slightly, expressing the same meaning.

"Thank you for your concern." Gu Yu smiled and nodded, and then asked, "You said, the captain wants to light the first star?" ”

"Her evolution level is about the same, and tonight's motor neuron evolution level reached 9%, so she came back and went into retreat." Yang Hao shrugged his shoulders: "Alas, after a long time, my motor neuron evolution is 9% worse, damn it, I have to wait for the next time." ”

"It's okay, won't it be next time!" Gu Yu smiled.

"Okay, we're just here to see you, it's okay." Yang Hao looked at Feng Song and Luo Teng: "It's scattered, it's a little more, let's rest early!" ”

The men said goodbye to each other and then left, and the dormitory was calm again.

Gu Yu smiled and closed the door, then fell asleep.

After a night's rest, he got up, washed up, had breakfast, and then turned on the top-up system to first count the harvest.

There aren't many dark energy and materials collected in the temporary pass, and there's not much to say, but the focus is on the loot obtained by acting independently later.

This look is really shocking.

Even if it consumes dozens of units of dark energy to light up Wuqu Xing, there are still more than four hundred units left.

Not to mention the materials, it took 100 diamonds to expand the backpack to fit all the materials back.