The road to technology

In the days that followed, the lens detector seemed to disappear, never making a sound.Not even when Xiao Yu searched hard and couldn't find a way.

On the other hand, Xiao Yu is worthy of being an oss trumpeter. In the process of exploration, he did not look for the lens agent to ask for answers, but looked for answers with an unprecedented relaxed attitude.

There is no idea of ​​giving up, only the pace of progress.

In this mentality, Xiao Yu still has time to recall the bits and pieces of life in the earth age, and the basic theory of escaping the four-dimensional barrier has long been similar in that era, and as a researcher, he has naturally come into contact with these theory, so he thought of it like a sudden flash of inspiration one day.

That's the Klein bottle.

Of course, Xiao Yu first thought of the Mobius ring.

And the reason why he thought of the Mobius ring was because while he was relaxing, he suddenly thought of a joke circulating in the earth age.

It is said that there was a young man who was unhappy and unhappy, so he went to a temple to find a Zen master to solve his doubts. He asked the Zen master why there is sadness in this world in addition to joy, and the Zen master asked the young man in return, and asked, if so, then this Is there any paper in the world that has only the front and no back?

But what the Zen master didn't expect was that the young man actually said yes, and then immediately tore out a piece of paper, then turned one end of the paper 180 degrees and merged with the other end, so the paper with only one side was born.

In this story, it may be to satirize the Zen master for not understanding science, or to satirize the young man who asked the wrong person, but Xiao Yu got the method from it.

If this piece of paper is a two-dimensional piece of paper, then the Möbius ring is what enables a creature living in it to go to the other side of the paper without ascending dimensions.

The same is true for the space that is now isolated by the four-dimensional barrier.

Since opening a four-dimensional channel is an unrealistic technology for Xiao Yu, he can only operate on the three-dimensional space, and through some distortion of the three-dimensional space, make it a Klein bottle structure, then follow this The mouth of the bottle enters, and you can come to the outside of the four-dimensional barrier.

But just like the real Möbius ring cannot be created in the two-dimensional world, because when the Möbius ring is twisted, it has already exceeded the two-dimensional space. Similarly, the real Klein bottle cannot be created in the three-dimensional world. was created in.

Therefore, in order to create a Kelein bottle in three-dimensional space, two conditions must be met. One is to have a very deep understanding of four-dimensional space, and the other is to have a four-dimensional space.

This is easy to understand. Just like a piece of paper, if there is only two-dimensional space, then this piece of paper can only be extended and shrunk in the direction of length and width. The reason why we can turn the paper is because the paper is in the in the three-dimensional space we are in.

So the premise of making a Möbius ring is that there must be a three-dimensional space.

In the same way, a [-]-dimensional space is required to make a Klein bottle.

Of course, the current Xiao Yu can't create a four-dimensional space, but this four-dimensional cover is a ready-made four-dimensional space, and Xiao Yu himself had some personal experience with the four-dimensional space when he met the semi-four-dimensional Taihao before, and also A lot of data has been recorded, so as long as Xiao Yu has the ability to bend three-dimensional space and the huge energy required to bend space, it will be fine. …

It just so happens that these two are what a fourth-level civilization should have. The ability to bend space was available when he conducted superluminal research before, and huge energy can also be obtained through element decay technology.

So in this case, Xiao Yu activated the intelligent life under his command and started to roll up his sleeves and work hard.

Finding a solution may not be achieved immediately, and it requires constant search for the correct spatial curvature of the twisted Kelein bottle, which is not something that can be achieved overnight, requiring a long period of time and a lot of experimentation.

Technological civilization is like that.

And after the experiment is successful, under normal circumstances, it will not be put into use immediately. Instead, a small Kelein bottle will be produced for practical testing. After there is no problem in the end, the target Kelein bottle will be produced.

Xiao Yu is naturally a technological civilization, so he did not miss any of these steps, which can be said to be very rigorous.

So only after 40 years of hard work, Xiao Yu successfully escaped from this four-dimensional barrier, enjoying the joy of success more than 20 years earlier than the original work.

This saved him more than 1 spaceships from being dismantled for energy.

The original fleet of more than 12 spaceships has more than 11 after successfully breaking away from the four-dimensional barrier.Of course, the fuel and so on are naturally exhausted, otherwise there is no need to dismantle the battleship for fuel.

When more than 11 battleships were all out of the four-protection cover, Xiao Yu immediately pointed to the original position of the lens and said: "Lens, I succeeded."

Don't want to, the voice that answered him was not here, but sounded from the space several kilometers away from Xiao Yu's battleship.

Of course not in the form of sound, but electromagnetic waves.

"Very good, then you should have seen the [-] four-maintenance cover reward that Taihao gave you and the last words reserved."

"Yes, I got [-] four-maintenance hood generators, and I also know the information left by Taihao Civilization, and I also promised that it will go to the Large Magellanic System to fulfill its last wish when it is strong enough." Xiao Yu has no With reservations, he seems to trust the lens detector a lot, perhaps knowing that the other party knows even if he doesn't say it.

"Very good, then it's time for me to go too. In my calculations, these four maintenance shields are enough to make you the top existence in the fourth-level civilization."

It seems that this guy is really just here to ask me some questions, or to confirm some information that I don't know, and it doesn't seem to be malicious to me.

Thinking like this, Xiao Yu asked, "Where are you going? Can we meet again?"

"I will leave the Milky Way, leave the local group of galaxies, and I am not sure if I can see you again, it depends on the arrangements my creator has made after getting the information I have recorded over the years and I am not sure I am leaving. Will it be discovered by that being in the process, but I have to do it in order to send a complete message to my creator as soon as possible."

In fact, it is not impossible for the lens detector to transmit information to Yue Yuanzhou in the Milky Way, but in Yue Yuanzhou's speculation, the guardian's eyes must have been focused on the galaxy-wide star field, so it is very possible to transmit information across the universe in the Milky Way. It will be cut off and even destroyed and prevented.

So you have to stay away from this area first.

And Xiao Yu, who heard such words, was deeply shocked again, so that he didn't listen carefully to the next words.

"Leaving the Milky Way? Leaving the Local Group?!"

The words of the semi-four-dimensional Taihao, "I came from the distant Large Magellanic Cloud with the Magellanic Meteor" sounded again in Xiao Yu's mind.

That sentence made him stunned for a long time.

Because he knew that it was a long journey of more than 16 light years, and if a semi-four-dimensional Taihao in the category of a sixth-level civilization wanted to cross such a distance, he had to follow the Magellan meteor.

But now this lensed detector says 'leave the Milky Way, leave the Local Group of galaxies'.

Xiao Yu has long known that Taihao, who can cross from the distant Large Magellanic System, must be a powerful existence. His challenge to the sweepers has proved this. Although he was killed by the Neutron War Star, it does not affect Xiao Yu. strong impression of it.