The entropy of an isolated system never decreases automatically, and the entropy does not change in a reversible process and increases in an irreversible process. - The Second Law of Thermodynamics

The moment he uttered Sir Newton's statement about the nature of gravity, Fei took control of the gravitational force around him.

The next thing is very simple, the mountain wall in front of him is already crumbling, he only needs to move his mind slightly, let the gravitational force near the mountain wall strengthen, so that the mountain wall will soon collapse under the pressure of his own weight.

- As it should have been.

But now, the stone wall in front of me is not moving!

Could it be that this stone wall is stronger than expected? Fei was a little surprised, but he didn't think much about it, just extended his mind to further strengthen the gravitational pull in that area.

The stone wall finally made a "click" sound, and some fine stone slag slid down the crack. He was overjoyed and continued to tighten his grip on gravity, but then he realized that something was wrong!

Fei Cai only realized at this time that his control over gravity was several times weaker than before!

Just two days ago, he could make hundreds of people weightless at the same time, but now, no matter how hard he tried, it was difficult to increase the gravitational pull of this small area in front of him by half!

He didn't feel anything abnormal, and his abilities drained silently!

Loss?

Suddenly, he thought of a possibility, but he didn't have time to think about it, now was the time for him to show the "power of the witch god", if the "divine power" suddenly failed, it would be difficult to say whether his status as a "divine envoy" would be retained.

The kingdom of God in my dream has not yet been established, how can I fail in such a place?!

In a hurry, an idea suddenly popped up in Fei Cai's mind, and before he had time to think about it carefully, he let the idea of gravitational pull move.

Instead of simply strengthening the gravitational force, he reversed the direction of a part of the gravitational force so that a moment formed between the two forces.

According to the theory of material physics, most of the materials such as stone are very resistant to pressure and very weak in shear resistance, as if someone can split a slate with one palm, but no matter how strong he is, it is difficult to crush the slate on the ground.

What's more, there were originally several cracks in this stone wall, which happened to become a breakthrough in shear force. Fei knew that this was a critical moment related to his future fate, and desperately let his mind control gravity and twist them to the angle he wanted.

"Quack-quack!!"

Several cracking sounds came from the inside of the stone wall, and the stones that had been integrated finally began to fall apart.

Fei Cai's forehead was already secreting cold sweat, and the expression on his face had long since lost his calmness, and just when he couldn't hold on, he finally heard a loud noise.

Rumble!!!

The mountain wall dozens of meters high finally succumbed under the "power of the witch god", and it shattered into several large pieces along the crack, slamming heavily on the ground, stirring up dust more than ten meters high, and even the surrounding ground trembled slightly.

At the same time, the cheers of the villagers also sounded like thunder.

"The power of the witch god! the power of the great witch god!"

"Long live the Divine Messenger!

"The witch god will always protect Biluozhai!"

Fei Cai let out a long breath, put down his hands that were already sore, and couldn't help but let out a wry smile on his lips.

The image of this oracle has finally been preserved in the hearts of the witch people...... It's not easy to be fooled by yourself!

But since this path has been chosen, this play has to be performed forever.

Fei Cai wiped the sweat from his forehead three or two times, and his face returned to a majestic and calm appearance, he walked unhurriedly to the villagers, faced the crowd of people who knelt in a crowd, and said loudly: "I announce in the name of the witch god: the construction of the altar will start immediately!"

"Yes!"

Hearing the Wumin's answer in unison, Fei Cai nodded with satisfaction, he called Yan Li over, and asked with a smile, "Are these stones enough?"

Yan Li nodded hurriedly: "The divine envoy personally took action, Yan Li is grateful! These stones are more than enough to build an altar!"

"That's good. Fei Cai secretly thought that he would have to build a temple in the future.

But now was not the time to mention this matter, and after mentioning a few precautions for building the altar to Yanli, he left with Biluo.

On the way back to the village, Fei Cai kept frowning and silent, Biluo seemed to notice something, but he didn't say anything, and followed Fei Cai quietly.

After only two days, my ability has attenuated a lot, and I wonder if it will continue to weaken as time goes by?

When he first found that his strength was weakening, Fei Cai had already thought of a possible explanation. At this moment, he thought about this conjecture again, and felt more and more that this was probably the real reason.

Because of entropy!

The second law of thermodynamics is great and hopeless.

Because it tells us that in an isolated system, entropy never decreases automatically, entropy does not change in a reversible process and increases in an irreversible process.

Entropy represents disorder and convergence. To give a simple example: half a cup of cold water and half a cup of hot water are mixed together and will soon become a warm cup of water, but a cup of warm water can never be automatically divided into half a cup of cold water and half a cup of hot water.

If we do not delve into the thermodynamic process in this phenomenon and explain it only from the perspective of entropy, the reason is that because the entropy of warm water is higher, it is more "disordered" than half cold water and half hot water, the entropy will always increase, and disordered things will never "spontaneously" become orderly. Therefore, warm water will never suddenly split into half hot and half cold.

In our universe, everything that is ordered is a "low-entropy body", the Milky Way is, the solar system is, the sun and the earth are, and all living things on the earth, including human beings, are also, and if there is not enough force to resist entropy, these things will collapse.

For example, galaxies exist because gravity gathers matter into planets, and the planets move in an orderly manner under the maintenance of gravity to form galaxies. Gravitation is one of the main forces in the universe against entropy.

For example, the reason why human beings exist is because human beings constantly absorb energy from the outside to maintain their low-entropy body.

So...... What about shrine maidens?

Shrine maidens can control some of the laws of physics. For example, Biluo, before she met Fei Cai, she was able to make the gravitational field, which was originally consistent everywhere, become strong in some places and weak in others, isn't this phenomenon similar to dividing warm water into cold water and hot water?

It is a process of changing from disorder to order, and therefore a process of entropy reduction. Biluo can reduce the entropy of external objects, which means that she is a low-entropy body - and not just a low-entropy body like an ordinary human, she is a low-entropy body with a lower entropy value than ordinary people!

The same goes for other shrine maidens, who have a lower entropy than ordinary people.

And what about Fei Cai?

When he first invoked the law of gravity, he was more powerful than any shrine maiden, and he could twist gravity into extremely complex shapes if he wanted to.

That is, he can reduce the entropy of external objects even lower.

In other words, he is a low-entropy body with a lower entropy than the shrine maiden!

Therefore, his state in the first two days was a non-stable state, he was a low-entropy body whose entropy was much lower than the average of this world, and he was like a piece of ice soaked in warm water.

According to the second law of thermodynamics, the entropy of a low-entropy body in a high-entropy environment gradually increases until it is consistent with the environment.

For Fei Cai, it is that his ability will gradually weaken until he is in line with the rest of the people in this world!

But this leads to a new question: witches are also low-entropy beings, and their entropy is lower than that of ordinary villagers, but why hasn't their ability been attenuated to the same level as ordinary people?

Fei Cai's intuition told him that the answer to this question was very important!

Whether or not he can find the answer to this question is related to whether he can surpass the shrine maiden, whether he can become a veritable "divine messenger", and whether he can establish the kingdom of God on earth!