The magnificent white jade pillar reaches through the sky, the clouds that are shining bright golden in the sky are constantly surging, a rainbow bridge crosses the cliff, and the roar of the waterfall is like the beating of a giant drum. The breath of the gods permeated the world.

Two magnificent statues stand on both sides of the jade pillar, lifelike, as if eternal existence. This is an existence that has only appeared in the mural, but at this moment it seems to have really survived, and all the scenes are silent in a majestic atmosphere, as if they will continue to exist silently and forever like this.

"Gavin, if no one saves us, wouldn't we starve here?"

"No!" Xiao Yifan replied affirmatively, "According to the law of life metabolism, we are definitely dying of thirst before we are starved to death. ”

Although ...... was a little amazed at Xiao Yifan's brain circuit, Olivia still couldn't help the doubts in her heart, "Isn't there water here?"

"If the water here can be drunk, then we won't starve to death if we gnaw on the bark," Xiao Yifan and Olivia teased casually on the edge of the deep pool of the waterfall, "You should have also discovered that since we entered here, our body's metabolism has stopped directly, and we can't exchange energy with this world in this independent world, that is to say, the energy of this world is conserved by the rules of this world, and we have no way to take it at all." ”

"What then?" Olivia frowned, even if she was a godborn, the energy to maintain bodily functions needed to come through ingesting food.

"There is no energy exchange, which means that the protein here is more difficult to digest than the gold of our world, and conversely, the energy in our body cannot be released into this world, and it cannot even be consumed ......"

"In other words, if this world exists forever, we will also live here forever and unaffected by time?" Olivia exclaimed.

"Theoretically, maybe it won't age," Xiao Yifan said with some solemnity, "Moreover, I think the dimension of this world is not complete at all, space is an ordinary three-dimensional expansion, but the dimension of time is different." Although there is theoretically only one-dimensional time, time here is strange. ”

"Strange, can you detect the change in the time dimension?"

"Have you ever noticed that everything here changes with the turn of day and night, but it's a subtle cycle, that is, everything that enters here can fall into this cycle? ”

"So what?" Olivia looked puzzled, and suddenly, her face changed, as if she had thought of something terrible, "You mean ......"

"You also thought of it?" Xiao Yifan smiled slightly, "Those two statues may not have belonged to this world originally, because if Anubis and Horus really existed, they must have existed in our world, and if they appeared here, the possibility of human interference in these things is very high......"

Olivia's face was a little pale, although as a god, she would not be surprised by some supernatural phenomena, but for the real gods, she still adhered to an attitude of awe, and was unwilling to accept and believe such strange things easily.

"It reminds me of You Chuxuan, the traveler of that time. Xiao Yifan continued.

"Are you saying that the existence of this world is related to the Cave of Silver?" Olivia immediately understood what Xiao Yifan meant.

"The theories related to time are extremely complex, not to mention the actual operation, and even after You Chuwei uses which ability, I am afraid that he can only sigh at the theories in it, 'It can only be understood but not spoken'. Xiao Yifan stared quietly at the bottom of the deep pool, as if the white mist that was rising could not block his vision at all, "Moreover, it seems that you don't know what 'conservation of independent energy' means." ”

"What do you mean?" Olivia was well aware of the law of conservation of energy, but had never heard of the term "independent conservation of energy".

"As long as our universe is in the three-dimensional space, one-dimensional time, everything must obey the law of conservation of energy, but this place obeys its own set of laws, that is to say, this is not an ordinary courtyard of gods, but it is very likely to break free from the shackles of the universe, and in another way of thinking, this may not belong to our cosmic space-time at all. ”

"You mean another universe, but isn't it just a courtyard of gods?"

"Not sure, after all, we have only seen ordinary courtyards, and we can't even observe what the horizon of black holes and white holes looks like, compared to the entire universe, what our eyes can see is too small, intellectually speaking, we are not better than ordinary people, all we can rely on is to be able to touch the origin of the world more truly. ”

Olivia pondered Xiao Yifan's words carefully, and when she came back to her senses, she suddenly realized that there were two huge loopholes in Xiao Yifan's explanation, and thinking about these two loopholes carefully was enough to make her feel creepy.

"Gavin ......"

"What's wrong," Xiao Yifan heard Olivia's voice seem to tremble.

"If all your speculations are true, then how do you explain that the two of us can still talk like this without being affected? Any life activity is inseparable from metabolism, but now, as you said, I can clearly feel that all signs of life in my body have stopped, so where does the energy used by our communication and actions come from? Also, if the matter that enters here is in circulation, why are we not in the cycle?"

"You still found out...... the smile on Xiao Yifan's face turned into unprecedented solemnity, "The rules of this world are beyond my understanding, beyond the scope of all existing theories. As I said earlier, everything here is in a subtle cycle, and this cycle does not correspond to a picture in every frame like in the movie, and all the events guided by the scenery change during the change of day and night, and the white jade pagoda has always changed in a fixed direction, so it is certainly not a time rewind. ”

"Isn't your description a cycle, along the same direction, and isn't that what our real life is like......

"No, it's a cycle," Xiao Yifan interrupted Olivia, "You should know that according to normal logical thinking, all cause and effect in the world are driven by time. Here, on the contrary, cause and effect drive the passage of time, or rather, there is no such thing as time at all, only cause and effect. ”

"Don't have time?! Do you have any absolute proof? It's not a funny joke. In Einstein's theory of relativity, the speed of time is relative, and it will change according to the rate of the object, but it will never be static, and even the "static boundary" in the black hole space will have the passage of time. It is precisely because time is an unavoidable and unstoppable force that time is included in the "dimension".

"Time is an arrow, the moment matter is born, it shoots out, the moment it is annihilated, we fall to the ground, we are only the faintest waves in the long river of matter pierced by it. This sentence is the slogan on the door of the physics laboratory of Plato's Academy, which has always been believed to be the truth, which is full of the awe and helplessness of the members of the research team of generations against the unknown force.

Xiao Yifan was silent for a while, and then spoke softly: "Don't forget, even the 'arms dealer' Han Luanshou, who made world-shattering achievements in the Tesla Research Institute, was just my assistant before. When I'm ready to break the truth, it must be when I'm absolutely sure. ”

"Absolutely, what did you find?"

"The rainbow on the waterfall, the drums and shadows under the deep pool, the change of day and night, who do you think is the cause and who is the effect in this world? Remember the premise first, this is not the world we are in, so it is not the day after the sun rises. ”

Olivia pondered for a moment, and was somewhat shocked to find that all the causal relationships that had been sorted out by the chronological order still existed after the concept of time had been taken out, but the logical order had been blurred.

Specifically, when day replaces night, day, rainbows, drums, and shadows appear almost in equal order.

So as the myth says, is it the rainbow reflected by the colorful neon clothes of the group of "girls" under the waterfall, or the rainbow that spreads after the sun rises and then shines on the shadow at the bottom of the pool.

Although Olivia knew that Xiao Yifan's thinking would not be so simple, she still raised doubts: "It seems that it is only a situation of mutual cause and effect......"

"No, the sound of the drum is the source of everything, and even the rhythm of the sound of the golden drum is related to the words on the white tower, although I don't know what the specific meaning is, but I can detect an almost perfect harmony with some sensitivity to music theory. Of course, this doesn't mean anything, it's just that Zimbabwe has been a place of miracle expeditions since ancient times, although it has never been studied in depth, but there are many expeditions, and I certainly can't assume that I am more familiar with miracles than those professional excavators, which is not my strong point after all, so it cannot be a coincidence that all this happened this time. ”

"What does that mean?"

"It is very likely that this time, the drum sound made me perceive," Xiao Yifan said, "and even I can perceive it, and it is impossible for professional surveyors not to find any clues, which shows that the drum sound has actually been changing, but the change has not broken that perfect harmony." This means that the drumbeat that has existed since the beginning as the 'cause' of all cause and effect is changing. ”

"So, the cycle you're talking about isn't a simple situational loop like a movie replay, but a different form of loop?" asked Olivia.

"Yes, and that perfect harmony in this world, in which the conditions for its creation are formed without external interference, so that this cycle can only be due to the result leading to a change in the cause of the next layer, that is to say, the sound of the drum in turn changes its own initial condition by itself as a conditioned effect. And this kind of logical relationship can only exist in computer programming languages, and it is called 'recursion' in functions. ”

"In the end, it's just a logical relationship. ”

"That's it?" Xiao Yifan smiled, a little confused, "This kind of logical relationship is like Penroseti, it is impossible to exist in the world as we currently know. ”

"Penroseti?" Olivia knew that this was caused by the trompe l'oeil phenomenon caused by drawing three objects into two planes, and perhaps in the higher dimensions, this kind of "infinite staircase" that is always upward but connected from end to end is possible, but it is not a category that can be studied today.