After crawling through twisting ventilation maintenance pipes and riding a high-speed elevator for dozens of kilometers in the central axis, they finally drifted to the destination of their trip, a small room on the outer wall of the satellite, with a direct view of outer space through huge floor-to-ceiling windows.

"There are many forms of energy, kinetic energy, heat energy, lightning, flame, matter, life, spiritual energy, and spiritual power, etc., it can be said that the operation of the whole world is a process of energy cycle transformation. Dragon food crops can only convert energy into spiritual energy, while we humans and dragon beasts can convert energy into spiritual energy or spiritual power. ”

"Then why do we still eat dragon food, we can generate spiritual energy ourselves."

"Spiritual energy is not spiritual energy, but it is an important energy that maintains the operation of spiritual energy. The spiritual power of modern people is generally much stronger than in the past, which means that we need more spiritual energy. ”

“……”

"You must know that in the feudal era, cultivating to the strong bone realm was the elite of the army, and the strong bone realm at that time was equivalent to the current entry realm."

“……”

"Once the spiritual energy generated by the self cannot keep up with the consumption, it must be replenished by dragon food."

"That's it."

"Do you know where the biggest source of energy in this galaxy is?"

"Uncle, you don't want to say?"

"Yes, there."

Following what Jelf was pointing at, Gu Lei saw an extremely shocking scene through the floor-to-ceiling window of the room-Chongri.

The Blue Sun Galaxy is a large galaxy with three stars alone, the blue giant star Doromo, the red dwarf star Doromo, and the red dwarf star Via, which can be divided into multiple small star fields.

The blue giant star Doromo is the core of the entire galaxy, and the red dwarf star Doromo is located right between it and the gas giant Raging Thor, and due to the gravitational equilibrium, the position of the three is roughly in an unchanging straight line. The second asteroid belt is located outside of the Raging Thor, encompassing the entire galaxy.

The second asteroid belt is said to belong to the Republic of Camilla, but it is about 30 billion kilometers long, and it is impossible to occupy it all. Therefore, the republic's colonization satellite group in the second asteroid belt is actually located in a small part of the asteroid belt that is close to the core of the republic.

That is to say, the Blue Sun, the Red Sun, and the colonies of the Republic of Camura's migrants are in a straight line, and the magnificent scene of Doromo overlapping with Dodoromo can be seen here.

I saw that behind a brilliant red fireball, there was an even bigger blue fireball, and the blue sun was like a crown around the red sun, which was particularly majestic and magnificent.

"Doromo, Doromo, Viva, these three stars account for 90% of the mass of the entire Blue Sun Galaxy, mass is energy, that is, 90% of the energy of the entire galaxy is concentrated there, so stars are the largest source of energy in the galaxy."

“……”

"After the Big Bang, energy was dominated by the four major forces to form material bodies, and inside the stars, gravity created an unparalleled pressure to trigger nuclear reactions, and then matter was reduced to energy through fission fusion, catalyzing life and illuminating all souls. Stars are truly the source of life! ”

"Uncle, it's the first time I've found out that you also have such a rich relationship!"

"There's so much you don't know!"

“……”

"In short, it's not for nothing that the two top martial arts universities in the whole galaxy, Doromo University and Dodoromo University, will be located on the two closest colonizing moons to the star. In fact, in medium and large immigration satellites, there are practice rooms on the outer walls of the satellites. ”

"Oh, uncle, you want me to cultivate here in the future, right?"

"The energy flow will be blocked by a denser energy flow - matter, especially the outer layer of the migration satellite, in order to defend against radiation, celestial bombs, and nuclear bombs, the outer layer is two or three kilometers thick, so there is a big gap between the energy concentration of the inner and outer walls, and cultivating here will get twice the result with half the effort."

"Okay, uncle, but if I use other breathing methods to cultivate here, wouldn't it be more effective?"

"No, the Dog Dragon Breathing Method has a little-known feature, that is, after the energy concentration is higher than a critical value, the cultivation speed will suddenly increase, and the cultivation effect is better than that of other breathing methods."

"I'm Karui, what's going on? It shouldn't be! In the past few hundred years, there have been hundreds of thousands of people who have practiced the Dog Dragon Breathing Method, so why hasn't anyone found out? ”

"The Dog Dragon Breathing Method was prevalent in the feudal era, when humans were still trapped in the ancestral star, and the energy concentration on the ground was low, just below the critical value, and its advantages were never revealed."

“……”

"At that time, it was the dog dragon breathing method that did not work well, so it was not blocked by the aristocratic class at that time and became the most widely spread breathing method in the past."

“……”

"It's a pity that after the era of the Great Migration of the galaxy, it has long been forgotten due to the popularization of other better breathing methods, so few people can discover this characteristic of him."

"It's so tortuous, no wonder, but how do you know, uncle?"

"By chance."

"I don't believe it."

"Whether you believe it or not, I believe it anyway."

"Okay."

"Next, you can cultivate by yourself, I'll go first, and go to class as soon as you finish cultivating. Also, you can come by yourself in the future, it is best to come in the morning, the effect in the morning is a little better than in the evening, climbing the pillar can also exercise your body, don't forget that exercising your body can also indirectly exercise your mental power. ”

"Okay."

……

As soon as Jelv left, Gu Lei immediately raced against time to start cultivating.

"Damn, it's so efficient!"

After a cycle, Gu Lei was overjoyed. Cultivating here, the time taken by the Dog Dragon Breathing Method remains the same, but the effect has become three times that of the previous one, in other words, the overall cultivation speed is 1.5 times that of the ordinary Dragon-level Breathing Method.

"In just over a month, I can truly break through to the Strong Bone Realm!"

After three cycles of cultivation, Gu Lei felt a sense of exhaustion from his soul, and knew that this was a normal reaction, so he stopped cultivating.

The relationship between spiritual power and the soul is still inconclusive, after all, there are still many people who deny the existence of the soul. The question of whether spiritual power is the soul or not is still debated, but there is no doubt that spiritual power is very closely related to the soul. That's why you don't start until you're 12 years old.

When human beings are first born, the soul is the most fragile, and it is easy to die at the slightest wind and waves. Therefore, you must wait until you grow up slowly and your spiritual power is strong to a certain point, and the most important thing is that you can only cultivate after your soul is stable, that is, after you are 12 years old.

The foundation is unstable, the seedlings are promoted, and the seedlings are not tall and good. There has never been a shortage of cases in history where seedlings have withered directly.

Even in modern times, when the common sense of dragon qi cultivation is more common, panicked parents can still occasionally be seen in the hospital with their children with dementia and uncontrollable saliva and snot.

And the doctor looked at the brain that had shown signs of atrophy on the film, and only said that there was nothing he could do, and it was useless for his parents to break their heads, and the consequences were terrible.

Similarly, when the soul feels tired, if it is forcibly cultivated, it is not unreasonably likely to cause similar consequences.

"It's running out of time."

Gu Lei hurriedly got up.

Fortunately, the way back is easier to walk. First, he was more proficient, and second, on the way, Gu Lei stumbled upon a map for the maintenance of the central axis and found a closer road.

So, he went down from another pillar closer to the school, which saved about ten minutes.

When he came down, he also found a nest of gray swallows in a crevice in the pillar. Inside there is a large gray swallow and a newborn baby gray swallow cub.

Unfortunately, however, the big gray swallow was crushed to death by a screw that fell out of nowhere. Only the little gray swallow left the puff flutter was "chirping" next to the corpse of the big gray swallow, constantly screaming, and I don't know whether it was sad that the big gray swallow died or was starved.

After Gu Lei fed Haguras some snacks to Little Gray Yan, he took the body of Big Gray Yan away for burial.

When there were about 5 minutes left before class, Gu Lei came to school smoothly.

As soon as he entered the school gate, he immediately felt a very different feeling from the past.