After helping Ji Haotian to upgrade his cultivation to the first-order cosmos realm, the Mother Goddess of the Unborn Prime stopped, she smiled and said, "It's just right to be promoted to the first-order cosmos realm, I can't overdo it, I will have to rely on you in the future. Myself. Haotian, the imperial grandmother will give you another greeting gift."

After she finished speaking, she handed Ji Haotian a simple purple-gold ancient ring.

Ji Haotian looked at the ancient ring in his hand, and said in surprise: "The Innate Ultimate Fortuner? Huh? There is actually an Ultimate Pocket Universe in it. This is a rare Innate Pocket Universe Ancient Ring!"

Pocket universe: "Pocket universe" is also a typical example of man-made universes. Advanced civilizations can use special containers to preserve their own space, and put a large number of objects in this small space, and the container itself is a pocket universe. After those substances enter the pocket universe, they will be reduced to a microscopic scale, and that small space is a mini universe for those substances that enter the interior (this small space often contains a huge space, and the external things after entering are due to the space structure. The volume of space shrinks due to changes in space, not because the substances that make them up are themselves changed. The structure of space is like a sponge, it can compress and stretch, and different kinds of space have different "density". If you put one in "density" If an item with a volume of two in a space of one is placed in a space of "density" of two, its volume will become one.

In the same way, the tiny space in the pocket universe that can hold a huge space is made using this technology of compressing space. There is also an artificial universe opposite to the pocket universe, which can use the technology of space expansion to enlarge objects, and the principles and phenomena are opposite to the pocket universe).

The pocket universe can not only store a large space station that collects various military weapons, but also store planets, galaxies, and allow a large number of creatures to live in it. Pocket universes come in a variety of shapes, most of which are bubble-shaped translucent balls, and some creative craftsmen will transform robots, furniture, toys, rings, weapons and even body parts into unique pocket universes. Of course, a large number of pocket universes can also be put into pocket universes, and the pocket universes in those pocket universes can still continue to accommodate other pocket universes... This cycle is not infinite, because the space inside the pocket universes is not for the outside world to add new ones. There are still certain limitations to the independent space of , and the overlapping of too many compressed spaces will lead to the collapse of the pocket universe.

There are some highly technologically advanced civilizations that can imitate their own universes and create infinite artificial universes as other parallel universes that contain infinite space, non-artificial universes. The pocket universe that contains infinite space inside is also a decoration that can be mass-produced at will (because the pocket universe containing infinite space has the most stable structure, so put an infinite number of pocket universes in the pocket universe, and then put an infinite number of pocket universes in this infinite space. Put an infinite number of pocket universes into pocket universes...the cycle can go on indefinitely without itself collapsing).

There are also various ways to enter the pocket universe. Some pocket universes only need to be touched, and they will be sucked into the inner space and then teleported to a designated location inside; some pocket universes require special portals to enter; however, The easiest way to enter the pocket universe is to destroy the container, and the inner world will either expand rapidly due to the loss of the barrier separating the two different spaces, engulfing the visitor, or collapse into a singularity, sucking the visitor in to take the symbol the miniature abyss of death.

Of course, if it is a pocket universe with a relatively stable structure, the world inside it will not rapidly expand or collapse due to the damage to the container, and the tiny space inside will form an energy bubble similar to a spherical wormhole, which is surrounded by a layer of light. Halo is completely wrapped in it. For different types of pocket universes, it is generally necessary to use different methods to get out of it. However, if those civilizations that are too weak are imprisoned in the pocket universe by the life in a certain advanced civilization, then their technological level will not be able to escape that terrifying and strange space cage. In a sense, the ecological ball is also considered to be the lowest-level pocket universe. By putting various substances and life in a spherical container, an independent ecosystem is created. It's just that some biospheres can use technology to put reduced creatures and other substances inside the biosphere, while some biospheres can't shrink anything (so they are usually built very large, because it has to accommodate various The true size of the object, some large biospheres can even fit entire galaxies).

Although nothing in the universe should be smaller than the Planck scale, since the space structure of the pocket universe is different from that of the big universe in which it is located, the Planck scale inside it is also different from that of the big universe (if in a pocket Put another pocket universe in the universe, then the Planck scale inside this small pocket universe will be smaller), and the speed of light inside will be slower than the outside world (but for the life inside the pocket universe, the speed of light It is still about 300,000 kilometers per second, but because one meter in the pocket universe is far less than one meter in the outside world, the speed of light is also far less than the speed of light in the outside world). Just mastering space technology does not mean that you can create a pocket universe with perfect performance. In addition to space technology, you also need to master time technology (combining the two is space-time technology).

If you can freely control the speed of the passage of time in the pocket universe, then it can be regarded as having sufficient control over this small world that you have created. Not only does space have "density", but time also has "density". If the "density" of the outside time is one, and then the "time density" inside the pocket universe is adjusted to be one hundred, then one minute outside is equal to one hundred minutes inside. Using this technology, the pocket universe can be used for "time travel": the "time density" in the pocket universe is adjusted to a smaller number, so that after a hundred years from the outside world, the internal time only elapses a few times. Hour. Therefore, the owner of the pocket universe only needs to sleep in it, wake up and go to the outside world, and he will come to the future a hundred years later (this can also be regarded as the effect of time travel). Although time passes at different rates in different regions of the large universe, the "time density" is essentially the same (the pocket universe does not count). If the "density of time" inside the big universe were changed from one to two, time would pass twice as fast in all regions.

Both "spatial density" and "temporal density" have certain limits, and neither will break through the maximum and minimum values. If you can't master the technology of creating or erasing time and space out of thin air, then you can only construct the time and space in the pocket universe by means of "cutting" and "assembling" (for example, if a civilization has a low level of technology, then they It is necessary to cut a piece of space in the big universe first, and then compress it to a certain size and put it into the pocket universe to achieve the effect of shrinking the object, instead of directly increasing the "space density" out of thin air; it must be "stealed" from the big universe. A certain scale of time can reduce the "time density" in the pocket universe). The Earth, the solar system, the Milky Way, the total galaxy... including the entire observable universe where humans are located is a small part of the pocket universe created by an advanced civilization. Only a very small number of beings in this pocket universe know the truth, and most of the civilizations inside it who have explored the universe naively think that the universe is only a limited space, and they do not know that the place where they live is not a complete universe. The pocket universe in which humans live is where the main storyline of human stories takes place, so it is named the "main universe".

The main universe is an experiment created by an advanced civilization for observation~lightnovelpub.net~, and civilizations capable of creating such a pocket universe are very common in the large universe. The space in the main universe has been increasing continuously in the form of a "big bang", and an immeasurable number of "space bubbles" appear out of thin air in the main universe and continue to expand, and then the distance between them is also getting longer. As a result, the inner space of the entire main universe is increasing (from an external perspective, the objects in the main universe are all getting smaller, and for the creatures in the main universe, it is the main universe itself that is getting bigger).

The "Big Bang" in most people's minds simply refers to the birth process of one of the bubble-like spaces in a pocket universe within a large universe. Without the help of external forces and internal supernatural forces, the main universe would gradually age with increasing entropy. Although as long as the natural development trend is followed, even the large universe will gradually become more disordered with the increase of entropy, but many advanced civilizations in the large universe can keep the pocket universe highly stable for a very long time. The state of order, only breaking the trend of entropy increase in the small area occupied by the pocket universe will not violate the general trend of entropy increase in the entire large universe. In the same way, although many civilizations that transcend the universe can interfere with the natural laws of the universe, they are still limited by their own level and cannot break through the rules of higher-level worlds (such as the multiverse world view).

The neuron universe and the pocket universe are just two of the many types of artificial universes, and the above-mentioned giant life forms are the "parallel universe system" composed of artificial universes. A parallel universe system is a system composed of the same type of artificial universe, which is equivalent to a micro-scale artificial multiverse, and a community composed of pocket universes can also be called a parallel universe system.