Yang Liu chose not to respond to him.

Then, Cheng Feng sent them into the Mystic Library.

There are many tests to pass.

And how difficult it is to get into it and feast your eyes.

Now that it's already in.

Naturally, I have to learn something.

Yang Liu's first choice is the experience of the secret master of time and space.

According to his needs, the digital platform recommended more than a dozen books to him.

He read it one by one.

The first book is an explanation of time and space, in which it is also said that time and space are a shortened set of time and space (time + space), which is a well-known topic.

Then, from the perspective of human science, space-time is the direction and speed of the movement of matter, for example, when light passes through the gravitational field, photons will change the direction and speed of their motion.

After all, Yang Liu has nine years of compulsory education and three years of high school education, so he naturally knows that this is a basic concept in mechanics, physics, astronomy and philosophy.

But beyond mechanics and physics, the other information that the mystic master learned, these concepts, were largely abstracted from the measurement and description of objects and their motion and interactions.

This involves the extensibility and persistence of objects and their movements and interactions.

Philosophically, the interdependence of space and time expresses the evolutionary order of things.

The divergent concepts involved include Zhou Yili's "Qiankun", Taoism's "Tao", and the Dacheng wisdom of Confucius and Mencius.

Time and space are both absolute concepts and fundamental properties of existence. However, the measured values are relative to the frame of reference.

The once-famous mystic believed that "time" was an abstract concept that expressed the arrangement of life and death of things.

Its connotation is infinite and eternal, and its extension is the measurement of the length and order of all events.

"Endless" means that time has no beginning or end, and "eternal preceding" means that the increment of time is always positive.

"Space" is an abstract concept that expresses the scope of life and death of things.

Its connotation is unbounded eternity, and its extension is a measure of the size and relative position of all objects.

"Unbounded" means that any point in space is in the center, and "forever" means that space is always present in the present moment.

Because in the argument of special relativity, the speed of light is the common ruler for measuring time and space, and the changes in time and space express the law of dependence on this common scale, that is, obey the corresponding transformation.

Therefore, the measured values of time and space are relative to specific inertial frames, such as simultaneity is not absolute in measurement, and two events occur at the same time relative to a certain reference frame, and may not occur at the same time relative to another reference frame.

Lengths and periods of time are also not absolute in measurement, with a moving ruler becoming shorter relative to a resting ruler and a moving bell slower relative to a stationary clock.

The speed of light is an absolute quantity in special relativity and is a constant c for any inertial frame of reference.

This information has been enough for Yang Liu to digest for a while.

He wanted to know some skills in time and space, but as soon as he came up, he was full of theories.

But at least Yang Liu has extracted a lot of new ideas about the secret master from it.

In addition, in another book that Yang Liu reads, space and time also represent some of the oldest concepts in human civilization.

In ancient times, primitive farming and grazing required the measurement of the earth and the time of day, which gave rise to the simple concepts of space and time and their measurement methods.

In the ancient times of Jiuzhou, there has long been a saying that "the upper and lower four directions are called the universe, and the ancient and modern are called the universe", and the "universe" and "universe" here are the concepts of space and time.

This is also the concept of primitive three-dimensional space and one-dimensional time, which is closely related to the universe.

The beginning of modern science inevitably involves the concepts of space and time and their measurement methods.

In recent centuries, the understanding of space and time in mechanics, physics, and astronomy can be broadly divided into two intertwined threads.

From the concept of space-time represented by the theory of mechanics and electromagnetism.

Through the special theory of relativity and the general theory of relativity, it has developed into the modern cosmology, which is a clue.

At the same time, from classical mechanics through quantum theory, quantum mechanics and quantum field theory to the pursuit of quantum gravity, superstrings and M theory, this is another clue.

There are still some basic problems in the world's understanding of space and time that need to be solved and are constantly evolving.

The special methods of the new generation, represented by the strange power of the supernatural mystic, have replaced the old ideas about the understanding of time and space.

All the inherent means can no longer satisfy people's growing new knowledge.

The strange power of time and space in the hands of the secret master is the human body itself.

And to launch, it is necessary to communicate with heaven and earth.

It's a control technique from nothing.

New attacks can be explored through simulation.

He also learned a new idea.

It is that the sun is used as the source of the gravitational field, and its mass causes the space-time where the sun is located to bend, and the degree of bending represents the strength of the sun's gravitational field.

Then the trajectory of Mercury, which is closest to the Sun, is most affected, and the starlight passing by the Sun's edge is also deflected, and so on.

That's a lot of that.

This discusses the reversal of nature by the occult supernatural powers.

In other words, the means of the secret master are based on the process of changing the nature of nature.

Then, by extension, imagine that a ruler moving at high speed becomes shorter than a ruler at rest, and a clock moving at high speed becomes slower than a bell moving at rest.

Everything just got a lot more interesting.

Willow also liked the conclusions of each book.

Even at any stage in history, mankind's understanding of space and time is incomplete and problematic, but some problems have not been discovered for a while.

It is precisely in this way that human beings' understanding of space and time is constantly raising questions and solving problems, and is constantly deepening in practice.

Almost every book emphasizes this......

Slowly, Yang Liu, who was not interested in books, suddenly became very interested in them.

In a book edited by the Mystic, he sees a larger world that he often never touches.

In addition, Yang Liu certainly did not give up on spiritual secret master books such as soul devouring.

There are also many valuable records in this regard.

Yang Liu is also thirsty for knowledge.

Spiritual books tend to be a little more ethereal.

But the shock is often more.

Those bold ideas that steal the sky and change the day are the construction of another world out of thin air, although unrealistic, but the victory is that the imagination penetrates all obstacles.

It's a little more fascinating.

Yang Liu also tried to connect the spirit with time and space, and this attempt produced a huge phenomenon.

Because the two were superimposed together, there was a unique reaction, and after continuing to study, Yang Liu experienced another change that he had never experienced before.

This change is called modifying memory!