To be exact, the edge of the main body of the solar system.

The cosmic space in which the sun, including the planets captured by its gravitational beam, can be called the main body of the solar system. In this main starry sky of the solar system, there are hundreds of millions of other small celestial bodies in addition to planets with constant trajectories.

Although the main space of the solar system is insignificant compared to the universe. But these hundreds of millions of small celestial bodies, scattered in this starry sky, are also very rare and very sparse.

Outside the main space of the solar system, there are a large number of small celestial bodies, forming a nebula that envelops the entire solar system.

In Zhao Yu's view, the solar system shrouded by this dusty nebula can be regarded as a small world.

And this nebula, like the fetal membrane of the small world, is a huge protective layer.

Celestial bodies are relatively independent existences, but similar celestial bodies form a system due to the influence of each other's metamagnetism. The Earth and the Moon form the Earth-Moon system, which orbits the Sun. The Sun and its gravitational beams make up the solar system, orbiting the center of the Milky Way.

Each system, influencing and independent of each other, forms a larger group of celestial bodies.

And the galaxy can be seen as a small thousand worlds.

- Although in the starry sky of the universe, the celestial systems do not really exist independently, and there are no spatial barriers between them.

The earth rotates the sun for one time, which is the time of the earth in one year. And the entire solar system, in the Milky Way's cycle, is more than 200 million Earth years. Under the protection of this nebula wrapped around the main body of the solar system, this tiny star system, under the influence of other star systems, seems to move slowly, but it is unusually fast.

Once Zhao Yu passed through this vast nebula, he essentially left the solar system. If you don't pay attention, if you don't follow the trajectory of the solar system, you will get farther and farther away, and if you go the other way, it will even take more than 100 million years before you may encounter the solar system again.

That's why it's hard to walk in the stars.

This is still a monk.

If you are a mortal, if you go on a business trip, you will have 10,000 lifetimes, 100,000 lifetimes, or even millions, 100 million lifetimes, and you will never want to return to your home planet.

This is still the assumption that he can survive.

When he arrived here, Zhao Yu became cautious.

Although he planned to leave the solar system to find planets in other galaxies to breed magic weapons, he was not really prepared to stay away.

Therefore, you have to be very careful as you pass through this nebula.

Although the solar system is not independent of other celestial bodies in the universe, the nebula exists as a protective layer, because of the influence of the huge meta-magnetism and star power between the galaxies, the space here is abnormally disordered.

If you are not careful, you will encounter danger, or be teleported to a distant and unknown place, and never come back.

Of course, this is the result of normal conditions.

Zhao Yu has the magic weapon of the Chaos Bead Small World, which can follow the time, return to the modern time and space, and then return to the ancient time and space. But even so, as a monk, Zhao Yu will not be careless.

In the environment of the starry sky of the universe, even celestial bodies can be regarded as precarious, what qualifications does Zhao Yu have to be careless?

He's not yet an immortal.

This nebula that envelops the solar system contains an infinite number of small celestial bodies, like dust. And it's unusually cold. Zhao Yu stood in the inner layer of this nebula, and he couldn't see the situation inside the nebula, but his spiritual sense could feel that kind of cold, a deep chill.

Several glittering comets came from afar, Zhao Yu looked back at the distant sun deeply, unfolded his sword light, and fled towards the comet.

Through observation, Zhao Yu roughly felt the direction of the solar system, and the comet that he was facing and fled in the same direction as the solar system. Choosing to use a comet to pass through the nebula is the most prudent thing to do.

In the chaotic nebula protective layer of this space, it is extremely dangerous to control the sword light to escape through the void. Without shuttling through the void, the speed cannot be raised. Therefore, it is most convenient and safe to board a comet and take a hitchhike.

This comet, which seemed to be oncoming, was extremely fast, and Zhao Yu's sword light flickered a few times, and the distance between the two was at least millions of miles, and it disappeared completely.

The sword light fell on this cold comet, and Zhao Yu's figure appeared.

The surface of the comet is pitted, but it shimmers with a metallic sheen. Such a comet, streaked across the starry sky, collided with many other small celestial bodies, like a smelting process, and its loose material was all broken up, leaving behind the strongest part.

This is also the reason why Zhao Yu chose this comet with a large size.

Because it is strong enough, it will not easily disintegrate when colliding with other small celestial bodies.

Another reason is that Zhao Yu fell in love with this comet.

On this trip, Zhao Yu's original purpose was to refine the magic weapon. Find a suitable planet, use all means, use the essence of a star as food, and use the mystery of the star itself to give birth to a treasure.

Of course, Zhao Yu would not choose a comet to conceive a magic weapon, even if this comet with a diameter of hundreds of kilometers is all composed of high-quality materials. He just used this comet as a preparation material for the cultivation of magic weapons after finding a suitable star.

There is too much preparation to conceive a magic weapon with the stars as the mother. The first thing is to lay down a huge refining formation on the suitable stars that you have found. And this comet was used by Zhao Yu as the eye of the refining formation to breed a magic weapon.

He would follow the comet through the nebula, and in the process, refine the comet to a certain extent.

According to Zhao Yu's calculations, when he passed through this nebula, this comet would be preliminarily refined by him into a magic weapon embryo, a magic weapon embryo that could be controlled. Then, after passing through the protective layer nebula of the solar system, control the comet, follow its original direction of movement in the same direction as the solar system, look for other galaxies that are also parallel to the solar system, find a suitable star, and then control it to fall on the star, so as to use it as an eye and arrange the formation.

Although the solar system is not small, in fact, this nebula is larger, and the main body of the solar system is like a small yellow in a big egg. It took Zhao Yu more than two years to come out of the solar system, and it would take at least twenty years to pass through this nebula. It took twenty years to refine this comet and preliminarily refine the embryo, and the time was enough.

When the comet enters the nebula, the temperature becomes even colder. Even Zhao Yu couldn't help but shudder.

But that's about it.

The superficial appearance of the change of Yuan Qi like temperature is no longer much of a threat to Zhao Yu. With Zhao Yu's current realm, unless he is thrown to the sun and roasted for a long time, until his mana is exhausted and his body is dried up, he can be burned to death. And the coldness in the starry sky of the universe is the same. In addition, with the Chaos Bead Small World by his side, no matter how harsh the environment is, he can replenish his mana at any time, and there is a superb magic weapon flying sword body protector, so it is impossible to freeze to death.

What's more, although the nebula is cold, it is not a real Jedi. It is also frozen and does not shatter the thirty-six layers of the best magic weapon forbidden by law.