Whether it is this primary sixth-level civilization or the fugitive Pegasus civilization, it is just an episode for Xiao Yu's journey. Xiao Yu is still advancing, moving forward.

The Shenzhou civilization has regained its calm, and Xiao Yu once again focused on construction and rushing, as well as research and development of technology. The battle with this sixth-level primary civilization caused Xiao Yu to lose 10 million spaceships, and many more spaceships suffered varying degrees of damage. Damaged ships need to be repaired, lost ships need to be replaced, and in the small universe, large-scale construction missions have never stopped.

However, in this war, Xiao Yu was not without gains. Obtaining the construction principle of the Loya Cup is one gain, and the other is obtained by analyzing the ships of these sixth-level primary civilizations.

This gain once again made Xiao Yu sure that it was impossible for a civilization to take into account all the current scientific and technological aspects. Because by analyzing these captive spaceships, Xiao Yu once again gained some unexpected technology. As a direct consequence of these technologies, Xiao Yu's research on the body fragment of two-dimensional creatures has made a key breakthrough.

"We are exploring the possibility of using 2D technology to construct a new layer of protective cover." During the scientists' meeting, Xu Junpo reported to Xiao Yu: "The four maintenance shields are a dimension that is more than the three-dimensional shijie, and all the attacks that have been suffered are transferred. The second maintenance cover has a completely different principle from the fourth maintenance cover. When an object enters a two-dimensional shijie, it will also be two-dimensional, and the two-dimensional shijie has no height, it only has length and width. This means that objects that enter the two-dimensional shijie can only move in the direction of length and width. and cannot move in the height direction. So can we do this by covering the outer layer of the spacecraft with a layer of two-dimensional space to defend against attacks from the outside? ”

Xiao Yu understood the meaning of Xu Junpo's words. In fact, when he obtained the technology of that sixth-level primary civilization, which led to a little progress in his own science and technology system, Xiao Yu began to think about this problem. The principle of the second maintenance cover is very simple, whether it is a light weapon attack or a physical weapon attack, it needs to move forward, and this forward direction can be regarded as the movement in the height direction. But two-dimensional shijie is precisely without height. So when these attacks enter the two-dimensional shijie, how will they move?

They will obviously be trapped in their own two-dimensional shijie by the two-dimensional shroud, and their movement in the height direction will be transformed into movement in the direction of length and width. And the second maintenance cover is to cover the entire ship hull, which means: Attacks from the front will be carried to the back of the ship by the secondary maintenance cover. Then the second maintenance cover can also release it.

Because the two-dimensional maintenance cover is not a two-dimensional shijie in the true sense. Therefore, the matter that enters the second maintenance cover will only temporarily lose the third dimension, and will not release strong energy due to the fall of the dimension. After they are released by the second maintenance shroud, they regain a third dimension.

This is the whole defense principle of the two-maintenance cover. Xiao Yu and this group of scientists have already understood the principle, and have proved the feasibility of the second maintenance hood in theory. What is needed now is to make it happen through jishu means.

And with the body fragments of two-dimensional creatures as a physical reference, Xiao Yu believes that it will not be too far away for him to achieve a real breakthrough.

In addition to the two maintenance covers. Research on two-dimensional weapons is also being carried out intensively. Xiao Yu is very sure that two-dimensional technology is in the galaxy, and only he has it. So if you can develop a two-dimensional weapon, you will have a certain advantage. The lethal principle of a two-dimensional weapon is also very simple, through some kind of encapsulated two-dimensional space debris containing a certain amount of energy as an introduction, and then through a certain trigger device, it will be triggered at a specific location. With the supply of energy, this two-dimensional fragment has enough ability to two-dimensional a certain range of three-dimensional space. Since space is two-dimensional, the matter in space is naturally not immune. Neither a spaceship nor an astral body can escape the fate of being two-dimensional.

The three-dimensional universe has some kind of self-healing property, so the two-dimensional space caused by the two-dimensional fragments will not spread indefinitely. After the energy carried by it is consumed, the process of two-dimensional space will stop, and then under the erosion of the self-healing effect of the three-dimensional universe, it will gradually shrink its scope of existence, and finally disappear from the large universe.

Unlike the two-dimensional shield, the two-dimensional damage caused by the two-dimensional weapon is permanent and irreversible. Any physical matter that has been two-dimensionalized will be converted into energy at the moment when the dimension falls, and then violently released, and Zuihou will completely disappear from the three-dimensional universe with the continuous fading two-dimensional space, and there will be no scum left.

Of course, this is only a theoretical situation. In the actual process of manipulation, it may also be impossible to make matter two-dimensional or pseudo-two-dimensional due to the abundant energy in some places and the space being too solid. For example, a low-power two-dimensional weapon is obviously unable to turn a planet into a two-dimensional existence, and for example, from his companion ghost clan, Xiao Yu knows that the neutron battle stars of the Sweeper civilization have also been two-dimensional and then restored to a three-dimensional structure.

But in any case, a two-dimensional weapon is a powerful weapon after all, and it is worth Xiao Yu's dedicated research.

It is still about 1,500 years before he reaches the Silver Heart, and during this time, Xiao Yu has launched large-scale research activities on it. The Academy of Space Sciences and the Academy of Physical Sciences once again received Xiao Yu's attention, and the team of scientists led by Xu Junpo, Luca 3, and Luca 5, under the leadership of Xiao Yu, once again launched a key research action.

Countless scientists are busy all day long, and countless information is being exchanged with each other, and this situation has lasted for more than 200 years. Finally, when Xiao Yu had replenished supplies three times and embarked on the journey for the fourth time, a key breakthrough occurred in the research of two-dimensional weapons. Xiao Yu was in the laboratory and witnessed this incident with his own eyes.

It was a clear glass box. Inside the box is a vacuum of extreme purity, with little material left except for a piece of dust that is only about a millimeter in diameter. In this case, a two-dimensional fragment filled with a certain amount of energy entered the box under the encapsulation of the packaging device.

Due to the use of anti-gravity equipment, there is no gravity in this chest. The dust was silently suspended in the box, waiting for its unknown fate. And because of the initial acceleration, the two-dimensional fragment is slowly moving forward at a constant speed.

When the distance between the two was shortened to less than a decimeter, Xiao Yu gave the order.

"Two-dimensional weapons, activated. Scientists pay attention to the various data in the experimental process. ”

As Xiao Yu's order was given, a series of indescribable reactions occurred inside this piece of iron. The two-dimensional space debris encapsulated in this piece of iron suddenly spread as if it had eaten a great tonic pill. The first to be swallowed by it were the pieces of iron that encased it, which were quickly two-dimensional. During this process, Xiao Yu monitored a very obvious energy release response. The two-dimensional space continued to expand, eventually swallowing up the dust that had been set up in advance.

This two-dimensional space eventually spread to a diameter of about one meter before finally stopping.

At the end of this shiyan, Xiao Yu and the scientists immediately began the follow-up data analysis work. After analyzing all the data, Xiao Yu announced the results: "This Shiyan was successful. Under our control, we encapsulated the two-dimensional fragments of haode in advance, and successfully made the intended target two-dimensional. However, this time Shiyan still exposed some problems, that is, the power is too low to massively expand the killing range, and the problem of not being able to carry out effective targeted strikes. These two problems lead to the fact that two-dimensional weapons are still unable to be applied in actual combat. In the following, we will continue to study these two questions. ”

Two-dimensional weapons are the basis of two-dimensional maintenance covers, because two-dimensional weapons can be counted as uncontrolled two-dimensionalization, and two-dimensional maintenance covers can be counted as controlled two-dimensionalization. Because the second maintenance cover also needs to release the absorbed three-dimensional objects or light in the future. If it is not released, the strong energy released by the fall of the three-dimensional solid dimension may instead cause the rest of the ship's protective shield to be affected. The relationship between the two is somewhat similar to that between a hydrogen bomb and controlled nuclear fusion. And there is no doubt that the hydrogen bomb is the basis for controlled nuclear fusion. Similarly, two-dimensional weapons are the basis of the two-dimensional maintenance cover.

Two-dimensional weapons have already taken shape, and it is believed that the development of two-dimensional weapons that can really participate in actual combat is not far away, and there is hope for the research and development of two-dimensional maintenance covers.

Time continued to pass slowly, and after another hundred years of time, the one-way control of the large and small universe communication channels based on the Luoya round cup Jishu was finally developed and entered into practical application. From this moment on, Xiao Yu will no longer have to rely on the instruments of the large universe, but only need the instruments of the small universe to easily control the opening and closing of the channel.

This means that the security of Xiao Yu's small universe has been improved by another level.

In the slow development, time gradually passed another 300 years...... (To be continued......)