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However, for what happened a thousand years ago, apart from a short written record, there is no other information that can be used to prove it.

"We don't have a time machine, and we can't travel back to the past. How can we see what happened a thousand years ago?"

"Of course, theoretically, this is not impossible."

At this time, Xu You suddenly said with a mysterious smile.

Hearing Xu You's words, Lin Shi was confused again, which made Lin Shi scratch her head and ask:

"Teacher, is it even theoretically possible to travel to the past? Isn't this a bit against science?"

"It is indeed impossible to travel to the past, but it is absolutely possible to travel to the future. From the existing knowledge, I already have two ways to travel to the future."

"Oh? Teacher, how can this be done?"

"The first way is to take an aircraft at the speed of light or close to the speed of light, fly in space for a period of time, and when you come back, you have already achieved time travel. According to the principle of time slowing down in the theory of relativity, your time is compared to that on the earth. Others will grow very slowly, so when you go back, your child may be older than you."

"Teacher, I understand this truth, but with the current level of technology, there is still a huge gap in building a spaceship that can reach or approach the speed of light. So what is the other way?"

"Another way is to instantly move to a position a thousand light-years away. At this time, if we have a very high-precision telescope and look in the direction of the moon without occlusion, theoretically You can see the appearance of the moon for a thousand years."

"But... then how to teleport to a thousand light-years away in an instant? Isn't this more difficult to achieve than the speed of light?"

Xu You smiled lightly, picked up a piece of A4 paper, and folded the paper.

While doing such movements, Xu You said:

"As long as it is proved that wormholes do exist, such 'teleportation' will become possible. The universe is so big, there are still many things we don't understand, and these are not unscientific things."

"Wormholes? This is a concept I learned about in science fiction magazines when I was young. But speaking of it, we are even building aerospace fighters, and it is not impossible to find wormholes. We observe now Those distant celestial bodies that we have seen are actually scenes tens of thousands or even hundreds of millions of years ago.”

Thinking of these, both of them felt an indescribable sense of sublimation in their hearts.

…………

In this conversation with Johnson, Xu You did get some useful information.

But these did not have any impact on our plans for lunar exploration and aerospace fighters, but only strengthened our determination to study these technologies.

After many days of research, the "micro-fusion" project has been experimentally confirmed that it can indeed achieve various theoretical goals.

After completing the research on this core technology, Xu You and Lin Shi returned to Jijing University.

After all, the two of them are teachers at Jijing University, so they still can't stay outside all the time.

But returning to school does not mean that their research work is over.

In fact, several technologies related to aerospace fighters still need them to continue research in the laboratory of Jijing University.

Back at school, after Xu You arranged the work, he picked Lu Zhiyao and went home from get off work together.

"How is it going, is your work going well recently?"

"Well, on the whole it went smoothly, and the research was basically completed within the planned time. Yaoyao, what about your side?"

"Recently, I'm doing some research on the natural philosophy of aerospace. This is what I did when I was in the Aerospace Academy, but I feel that the information I have is not hard enough, and some of it can't support my research topic. I don't know you Are there any other topics related to aerospace recently? Is it convenient for me to go to your laboratory for an internship for a while?"

Xu You didn't expect that Lu Zhiyao would make such a request, and Xu You was still very willing to help Lu Zhiyao with these requests.

"I will apply to the higher authorities tomorrow. If there is no problem, you can come to my laboratory for an internship. I think there is basically no problem. You have participated in many large-scale projects before."

Lu Zhiyao knew no fewer internal secrets than many internal scientific researchers, including Huang Sibai's incident, and there were only a few dozen people who knew the truth.

"Well, it's okay, let's wait for the result of the application first."

Lu Zhiyao also has a good understanding of these processes, knowing that these national-level secret research projects will not be disclosed to outsiders casually.

After the two returned home, they changed their clothes and freshened up, and then the most exciting part began.

Brainwave communication.

This ability that only the two of them in the world can master is also a secret between the two of them.

After a period of code improvement, Xu You has added some new code combinations, and he can communicate with Lu Zhiyao directly through Chinese.

After some brainwave exchanges, both Xu You and Lu Zhiyao's foreheads were sweating quickly.

After reading the message from Xu You, Lu Zhiyao typed out this string of text on her mobile phone and handed it to Xu You for verification.

"Well, Yaoyao, very good, every word, every punctuation mark is completely correct. The efficiency of our information transmission in this way is already very close to the normal communication method."

"Hey, it's because of your good guidance." Lu Zhiyao smiled.

Xu You is very satisfied with their speed of progress. As long as the two of them practice more, the speed of information transmission between them will even be faster than normal speaking.

Because of the different principles of information transmission, this way of transmitting information through brain waves is very similar to some communication devices, which can transmit a large amount of information in a short time.

"Unfortunately, I still haven't mastered the technology of sending information through brainwaves." Lu Zhiyao regretted.

Up to now, Lu Zhiyao can only receive information, and cannot send any information through brain waves.

"It doesn't matter. Being able to receive and translate brainwave information is already very powerful. As for how to use brainwaves to send information, it's hard for me to explain clearly. Yaoyao, you might be able to master it someday."

Such abilities that are not specially given by the system, Xu You believes that he is not the only one who can master them.

It's like doing some simulations in your mind. Even before this skill officially appears in the system, Xu You can use this ability to a certain extent.