The element of the event appeared in the cosmic coordinates, and when Yuan Fei saw it at that time, he only felt a little bored, because that event, didn't it happen at the moment?

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It seems that this 'event' is the most arbitrary, even indeterministic, thing in the entire cosmic coordinates, is it what happened at that time?

However, Cheng Lao actually cared very much, this is really ......

"You mean, this event is actually a point?" Yuan Fei thought about it for a while, and then gave such an answer.

"That's right, Yuan Fei, your understanding of "A Brief History of Time" is very good!" Cheng Lao affirmed Yuan Fei's answer!

Why does it have anything to do with "A Brief History of Time"?

Because very simply, in this book, there is a very famous illustration to illustrate the relationship between time and space, but this diagram is actually depicting events.

An event is something that takes place at a characteristic moment and at a characteristic point in space ...... Chapter 2 of A Brief History of Time, Time and Space.

The event is defined in this way, and then this forms a diagram that can describe the event very well, which is made up of two cones.

Time is positive, then the arrow of time is on top, and as time progresses, from the event to the future, and at the same time the universe is expanding, that is, space is changing, then the future of the event forms an inverted cone.

And the past of the event, if this event is used as the reference point, then although the arrow of time is upward, in fact, time moves forward to the past at the point of this event, which can also be regarded as the positive development of time, then space is still expanding, and conversely, that is, space shrinks from the past to the point of event with time.

So, this creates a figure with an inverted cone on the top, a regular cone on the bottom, and the connecting point in the middle is the event!

Thinking of this figure, Yuan Fei understood why Cheng Lao mentioned this event, and why the event became an important element of the cosmic coordinates and was indispensable.

Event is a good reference 'point', which contains many other elements, including time and space......

And Qi Qingxuan's jump back from xn7693 is in line with the description of this graph, she is coming back, she is reverse, but in this graph, she is actually positive, so it does not violate the principle of the unity of time and space in the universe.

When we get here, it's very complicated, but it's all because we humans can explore this universe at high speed, or rather, we humans have space aliens who do interstellar travel in the way of space jumping!

So, is it possible to say......

"We humans can explore the entire universe, and we can come to the Andromeda Galaxy like we do today, all because of the appearance of space superpowers?" Yuan Fei naturally asked such a question.

Naturally, because everything seems to make sense, but there is a lot of meaning in it.

"Yes, it does." Cheng Lao replied simply, and immediately he said: "Come to think of it, you finally understand some other things now, right?" ”

That's right, Yuan Fei did understand, that is the education he has always received, especially the history he said in the last lesson of high school graduation......

It took 50 years for humanity to explore the entire galaxy!

In fact, this sentence is just a simple description of the history of human development to today, which seems to be no big deal, but in fact, it contains a lot of connotations, because the Milky Way itself is more than 2 million light-years in size, which is a unit of distance for light-years, so how can human beings explore it in 50 years?

Obviously, the answer is this, because of the spatial superpowers, and because of them, coupled with the number of human beings at that time, then it is natural to accomplish such a feat that seems impossible from a logical point of view!

In the Age of Discovery, which began in the 23rd century, the population of the earth was about 10 billion, and once the Universe Voyage began, human beings could continue to reproduce on other planets, and ......

And so on, other planets, planets suitable for human habitation, but such planets, their time ......

Yuan Fei only felt that his brain seemed to have broken through another barrier, and he had figured out an important question, that is, what if the time of that planet was fast?

In this way, won't human civilization progress faster?

It is likely that on such a planet, more space supernatural beings appeared in human beings, multiplied more populations, and then ......

It turns out that human exploration of the universe is advancing in an explosive way, not slowly, as is generally thought.

That is, this is not addition, not 1+1=2, but the development of geometric multiples!

But thinking of this, I don't know why, a very bad idea appeared in Yuan Fei's mind, that is, our human exploration of the universe, in terms of the Milky Way, is simply like the spread of a virus......

Well, it's really wrong to think like this, Yuan Fei also admits that it's not good, but if you explore a small galaxy even if it's a red dot, and put such a red dot on a big image like the Milky Way, it's really like a virus spreading, slow at first, but it didn't take long for it to explode instantly, and the entire galaxy was red.

Oh yes, this should be described as the lotus pond effect, the lotus pond is, as long as the lotus leaf covers half of the pond, then the next day, the whole pond will be covered...... It's good, this guy Yuan Fei has freed mankind from such a bad image of the virus.

"Boy, the old man has seen a lot of powerful space system evolutionists......" Cheng Lao said at this time, with an inexplicable vicissitudes in his words.

But now, although a lot of questions have been explained, it seems that many mysteries have been revealed, which is a good thing, but Yuan Fei feels that there are more mysteries.

This seems to be a law, Yuan Fei is not surprised now, but there is a particularly important thing at the moment, and he can't understand it yet, that is......

"Why do the powers of Kiba, they want to deceive all the Kibasians?"

That's right, that's the problem, originally we humans were already very good in the universe, but in the official information of Kiba Star, especially the historical data, it is all secretive, and it is completely to give people the feeling that we humans are like this, just living on the last planet of human beings like Kiba Star, anyway, this is the feeling.

Although, the previous 50 years explored the galaxy, which implied great contradictions, if you are a person with a heart, then it is likely to be like the current Yuan Fei, find out the clues, and then get the truth.

But on the whole, Kiba Star has officially covered up too much, this matter...... I'm afraid it was the Glory Academy that did it!

As soon as he thought of this, Yuan Fei's mind came up with the face of his father, that is, Shen Tu Fang......

But why did they do that? Or why did he do it? Is there any benefit to doing this?

We humans know that we are already awesome, is there anything wrong with that?

And Cheng Lao's answer made Yuan Fei even more confused, he said so.

"This question still has to be explored and understood by yourself."

Cheng Lao has always said that he hopes that Yuan Fei will realize it himself, but as far as Yuan Fei's own thoughts are concerned, he feels that this problem does not seem to be difficult, isn't it that the official of Kiba Star is fooling the people?

Foolish policy, is it still rare in the history of mankind?

However, from Cheng Lao's words, I can hear that this question is very difficult...... This is where it is particularly strange.

So, out of distrust of Cheng Lao, anyway, this guy just didn't talk about his relationship with that Zhao Tianyou, which made Yuan Fei really speechless, so since this was the case, Yuan Fei would find a book to read by himself, at least he didn't want to be fooled by Cheng Lao.

But however, all the relevant information that can be seen and the writings left by predecessors seem to confirm Cheng Lao's words. Perhaps these sources do not reveal directly, but they all suggest similar directions.

"Boy, the old man can give you a hint......" Although Cheng Lao knew that Yuan Fei didn't trust him, he still didn't get tired of it.

"Say!" Yuan Fei had no choice but to ......

"Don't you think the light cone of 'events' looks like something?" Cheng Lao brought the topic to time and events again.

"Like ......" Yuan Fei suddenly thought, it seemed to be very similar to ......, "You mean hourglass?"

"Hahaha...... The child can be taught! Cheng Lao, this guy smiled.

That's right, the shape of the event is very similar to the hourglass, and the hourglass ...... Isn't it just for timing?

Yuan Fei couldn't help but wonder, could it be that all this is even Kiba Xing's policy of fooling the people, is it all related to time in the end?

Time, time, time......

Why is all the blame for all the problems in the end?

A star rating, not only did the mystery not decrease, but it seemed to be more, which made Yuan Fei a little helpless, but it made his mood change a little, at least Zhou Meiyun's matter had a much smaller impact.

However, just when Yuan Fei was frantically gnawing on books, there was one more person in the library......