Since neither internal force nor qi can replace oxygen, can I convert it into oxygen, just like water electrolysis produces oxygen, if I can create a special exercise that converts internal force into oxygen, then I will not be able to fly freely in the universe!

Thinking of this, Gu Santong was excited for a while, but after the excitement, he immediately frowned, "No, this method has a serious flaw, it is indeed feasible to convert internal force into an internal cycle, but this is my own internal force, and when the internal force is exhausted, I don't still need to take the lunch!" ”

This self-sufficiency is a thankless option, and it may be a good option in an emergency, but under normal circumstances, it is not advisable.

"Hmm~" Gu Santong fell into deep thought.

He might be able to think about it differently, the cultivators in those novels, after cultivating to a certain level, can cross the void in the flesh, why is this? In fact, the answer is very simple, because they can absorb the free energy in the heavens and the earth.

Human life activities all require human body energy, and ordinary people's human body energy is taken from food, and then produced by oxygen decomposition, but what about cultivators, some cultivators do not eat the fireworks of the world, so how do they maintain their life activities? Doesn't it depend on the aura or vitality of heaven and earth?

And whether it is aura or vitality, these are just nouns on the title, and they are a special kind of energy to put it bluntly. Cultivators rely on this kind of energy, as small as not eating the fireworks of the world, as large as traveling the universe in the flesh, and they are no longer limited to the tedious set of energy acquisition methods of human beings, but have chosen more advanced methods.

So, can I also draw energy from the outside world to meet my needs?

Thinking of this, Gu Santong was stunned suddenly, "If this Nima can really do it, I am cultivating immortals, even if it is not cultivating immortals, it is also a cultivation technique close to fantasy." So, what do I do? ”

Stay up all night without sleeping, and then the spirit will be in a state of sleep, at this time the body will be like a sponge, unconsciously ingesting the aura of heaven and earth, the most obvious feature is the dark circles, which is a common phenomenon produced after the aura gathers into the eyes, why the aura gathers in the eyes, that is because the eyes are the window of the soul, the eyes are through the aura of heaven and earth, and the black eye sockets are caused by the congestion of the acupuncture aura near the eyeballs, with dark circles you will definitely feel very sleepy and tired, but as long as you grit your teeth and hold on, When the aura breaks through the acupuncture path, it will ...... Ma Dan, I can't make it up.

The above content is pure fiction, Gu Santong is not stupid, how could he possibly do such an absurd experiment! It's just his own fabrication, and it's clear that it's an unreliable approach.

There are also free energies in the universe, such as cosmic rays. As long as you can absorb this energy, then you can freely roam the universe.

But the question is, how do you absorb this energy? In addition, the cultivator's set of theories was also pondered by himself, and he didn't know whether this was the case or not.

"Damn, it would be nice if an immortal cultivator appeared in front of me, I could ask him if different energies had an impact on life activities." Gu Santong shook his head and sighed, "I can cooperate with him to explore various versions of different energy absorption methods, ah, let's cultivate immortals scientifically!" ”

"Well, forget it, I don't want to do this, let's think about how to absorb cosmic rays first."

……

The next day, when the sun rose from the sea level, Gu Santong couldn't help but yawn as he looked at this big red fireball.

There's no way, the immortal who cultivated all night last night was thinking about how to absorb energy all night, but fortunately, his physical fitness is excellent, and it doesn't matter if he cultivates an immortal for one night.

At this time, Tiantong trotted over and reported to Gu Santong: "Master, when will you leave?" ”

Gu Santong twisted his neck, turned his head, and said casually: "Let's go and see your repaired spaceship first, I haven't even bothered to look at it these days." ”

"Yes, master, please come with me." Tiantong turned around and led the way for the ancient three links.

When he came to the beach, Gu Santong saw a spaceship with a size of more than 50 meters and a height of more than 10 meters docked on the beach.

Looking at this spaceship, Gu Santong couldn't help frowning, in the eyes of ordinary people, this may be a huge flying machine, but for him, this spaceship is a bit small, he is afraid that he will not be able to fit in!

As if seeing the question of the ancient three links, Tiantong immediately stepped forward and explained: "Don't worry, the master doesn't have to worry, the spaceship can accommodate the master, of course, it may be a little crowded for the master." ”

"Let me go in and try it." The ancient three links opened.

"No problem." As he spoke, Tiantong ran to the side of the spaceship, and with a tap on his wrist, the hatch of the spaceship opened.

The hatch is a bit small, eight meters high and four meters wide, and you have to bend down to avoid bumping into the ancient three links.

The inside of the spaceship seemed to be very narrow in the eyes of Gu Santong, and he couldn't straighten his body at this height, so he could only bow his head slightly. He walked around and couldn't help but sigh: "I always feel very uncomfortable, forget it, don't be picky." ”

Gu Santong walked out of the spaceship and said to Tiantong: "I'll go catch some prey, you guys pack up and take all the things you should bring." ”

"Yes, master." Tiantong responded seriously.

The ancient three links exploded directly, and they rushed into the sea at once. When you leave, you still have to bring enough dry food, and the devil knows where the next stop will be!

In the sea, Gu Santong easily caught a lot of seafood, and after coming ashore, he asked Tiantong and others to wash and dry the prey. Then, he went into the mountains to catch dinosaurs.

I'm afraid it's going to be hard to eat dinosaur meat in the future, so take this opportunity to eat enough.

Ten minutes later, Gu Santong came back with a huge pterosaur, and this was this morning's breakfast.

……

A few hours later, Tiantong and the others carried a large pile of smoked fish and meat into the spaceship, and then Gu Santong carried a basket of fruits and handed them to them.

The group worked for a few minutes one after another, and finally got it done. Gu Santong finally used his divine sense to check the temporary base again to see if there was any omission, and after seeing that there were no hidden items left, he found a boulder and engraved the words 'Gu Santong visited here' on it. Then, he stepped into the ship.

"Boom~" The spaceship started up, making a loud rumbling sound.

Immediately, the spacecraft quickly lifted off and flew towards the outer space of the planet. The view outside the window flickered and soon disappeared completely.

Looking at the blue planet below, Gu Santong silently said goodbye in his heart.

Farewell, Saiyan Ancestor, farewell, Saiyan Ape!