The cuboid is a very common thing in geometry, and even in real objects, there are many cuboids, such as a box, a box, a pack of cigarettes, a cabinet, these ordinary things are the structure of a cuboid. Even if Xiao Yu is now a sixth-level civilization, this situation still hasn't changed.

But these cuboids, whether they are the cuboids of the human era or the cuboids of the current sixth-level civilization, are not cuboids in the true sense, or they can only be said to be cuboids in a vague sense. Because they just look like cuboids, a little more elaborate detection can reveal that they are just irregularly shaped objects. It may be that one side is slightly sloping, or that one edge is a little longer or shorter than the others. Because there will always be errors in machinery manufacturing, the development of science and technology can reduce the error, but it cannot completely eliminate the error.

And the cuboid in front of Xiao Yu at this moment is different from those cuboids in a vague sense. It is a true box, its two opposite faces are absolutely parallel, all its opposite edges are absolutely equal, and the two edges that intersect between the two faces are absolutely perpendicular. It doesn't have the slightest error, at least to Xiao Yu's eyes.

Its ratio of length, width and height is exactly three to one, and according to the distance calculation, Xiao Yu measured that the length of this cuboid is 9.3 meters, and the width and height are 3.1 meters. This data is very accurate, neither a little more, nor a little less, at least Xiao Yu can't find its error now.

A thing that has no error is a terrible thing, and this is something that surpasses the limits of Xiao Yu's comprehension. Xiao Yu didn't know how to make this kind of thing. Now Xiao Yu can manufacture precision mechanical parts with an error of only five femtometers. One femtometer is equal to one trillionth of a meter, which is so precise that human beings in the age of the earth cannot imagine it, but there are still errors.

In other words, it is impossible for Xiao Yu to make a steel plate that happens to be one meter long. No matter how hard Xiao Yu is. No matter how precise the equipment used, the steel plate made by Xiao Yu will always be a little more than a meter or a little less. This is the error, something that even a sixth-level civilization can't eliminate.

But at this moment, the cuboid presented in front of Xiao Yu has no error. Its length is exactly 9.3 meters, and its width and height are exactly 3.1 meters, neither more nor less. Moreover, its surface is absolutely smooth, even with Xiao Yu's resolution at the level of flying meters. Xiao Yu still couldn't find any bumps on its surface.

This is very similar to the water drop detector that Xiao Yu once encountered. Xiao Yu, who was still weak when he was a child, was also amazed by the seemingly absolutely smooth surface of the water drop detector when he first saw it. But this was only for Xiao Yu at that time, with Xiao Yu's detection ability now, Xiao Yu can easily detect the surface material structure of the water drop detector. Thus knowing that it is not absolutely smooth. In fact, the water drop detector. At the picometer level, unevenness begins. It's just that Xiao Yu couldn't detect these things at that time.

It was an ordinary cuboid, which made Xiao Yu feel a shocking feeling like the heavens and the earth were overturned. Xiao Yu never thought that in this universe, there would be such a precise and error-free thing.

Think about it, if a ball in mechanical manufacturing could take on the form of an absolute sphere. The surface is absolutely smooth, if the teeth of the two gears fit perfectly without a little friction, then. How efficient is the transfer of force? How horrible is the utilization of energy?

I'm afraid, in such a machine, lubricating oil is a completely superfluous thing.

"No, no, it's impossible, the error can't be eliminated, this should be the truth in the universe, even if this civilization has reached the level of a seventh-level civilization, they have absolutely no way to break this theorem. It must be like this, it must be that the error of this cuboid is too small to find out with my current detection ability, it must be like this, it must be like this. Xiao Yu muttered to himself, trying his best to calm his tumbling mood.

"Could it be that this is the manufacturing capacity of a seventh-level civilization in the mechanical direction? Even such a delicate cuboid can be made, so what else can't they make? No wonder, no wonder they can travel hundreds of river systems with the mass of a single star...... The ability of machinery manufacturing has reached such a level, this, this should be a kind of extreme. ”

Although it is theoretically possible to completely convert a piece of matter into energy with the help of elemental decay and positive and antimatter annihilation as a source of energy, this is not the case in practical applications. Because Xiao Yu has no way to make full use of all this energy, there will always be inevitable losses in the process of mechanical operation. This is the biggest bottleneck restricting the efficiency of mechanical improvement, error. It is conceivable that if Xiao Yu can reach the level of completely eliminating the error, or just eliminating only this seventh-level civilization, Xiao Yu's energy utilization rate will have a huge leap.

This seventh-level civilization in the mechanical direction is using a simple cuboid to unscrupulously display its scientific and technological strength here, laughing at this group of humble existences.

At this moment, the shock in Xiao Yu's heart has turned into a feeling of powerlessness. Xiao Yu seemed to see a high mountain that he could never climb in front of him. The current Xiao Yu can't even give birth to the mind of surpassing this seventh-level civilization in his heart.

"This should be the remnants left by that seventh-level civilization, right? Could it be that their remains are just such a cuboid? Xiao Yu thought with doubts in his heart, "Weishenme, these powerful beings waiting beside him, didn't make a move to snatch them?" And where did the Sweeper civilization go? ”

It's a bit weird to use a cuboid as a relic of your own civilization, but it's not unacceptable. At the very least, by studying the manufacturing process and material process of this cube, you will be able to make great strides in the relevant fields of your own civilization. Moreover, this is the creation of a seventh-level civilization, which means that as long as one's own civilization has not become a seventh-level civilization, one's own civilization can always draw nutrients from this thing. And science is originally a bypass thing, at least for civilizations below the seventh level. Then, in a sense, it is not impossible to use this cuboid to promote the scientific and technological progress of the entire civilization.

Moreover, the most important point is that if there really are different development directions for seventh-level civilizations, then for a seventh-level civilization that is intensively researching space technology, this thing made by the same seventh-level civilization still has great value for itself. So, in a sense, this thing has a great attraction even for seventh-level civilizations.

Since its attraction is so huge, but these powerful beings looking around Weishenme didn't snatch it?

When the situation is unclear, it is safest to follow the crowd. Xiao Yu also wisely suppressed his thoughts of taking it away. Although this thing has a strong attraction for Xiao Yu that Xiao Yu can hardly refuse.

"This is the creation of a seventh-level civilization in the mechanical direction. The Neutron Battle Star of the Sweeper Civilization is the creation of a seventh-level civilization in the direction of the Extreme Stars. The two-dimensional fragments of space creatures you obtained are created by space creatures blending some of the technology of the seventh-level civilization in the space direction. At this time, Xiao Yu received a message from Taihao of Science and Technology unexpectedly.

Xiao Yu didn't feel strange about these things that Taihao knew. In fact, since his birth, Xiao Yu has never completely gotten rid of the influence of Taihao civilization on him.

Xiao Yu's heart moved slightly.

Xiao Yu noticed two terms, one was a seventh-level civilization in the direction of the extreme star, and the other was a seventh-level civilization in the space direction. What Xiao Yu expected was that the neutron battle star, which had dominated the galaxy for tens of millions of years, turned out to be the creation of a seventh-level civilization in the direction of the extreme star, and the two-dimensional weapon he developed was actually mixed with the technology of a seventh-level civilization in the space direction.

These two terms completely confirmed Xiao Yu's guess.

"It seems that my speculation is correct, and sure enough, there are many seventh-level civilizations with different development directions."

"Taking the initiative to tell me these messages, is the Taihao Alliance taking the initiative to convey kindness to me? Very good, although for some unknown reason, the Taihao Alliance instigated the Tree Clan Alien Beasts to attack me, but at least, our two groups have not completely fought each other on the bright side. Then, in the current situation, it is only natural for us to form an alliance. Very good, as long as the sweeper doesn't come, the two alien beasts, even with the Guardian civilization, are not our opponents. ”

"The sweeper weishenme didn't come? What are you all waiting for? Weishenme didn't take a shot to snatch this cuboid? Xiao Yu asked three questions in a row.

These questions are all about the current situation, and none of them involve the grievances between Xiao Yu and Taihao civilization. Xiao Yu is also using this to show his attitude, that is, if there are any grievances between us, we will talk about it after this incident has passed.

Xiao Yu believes that Taihao will definitely understand what he means.

But contrary to Xiao Yu's expectations, Taihao only had the same answer to these three questions, and it was extremely concise.

"Wait." Technology Taihao said. (To be continued......)