Separated by one door, two worlds, inside and outside the mountains, are all human beings. Cha Wenbin left, Feng Qiyun didn't send him, he promised Feng Qiyun that he would return the corpse.

In the end, the Great Elder only told Cha Wenbin four words: Things must be reversed.

Gu Qinghe came back, with a message, Cha Wenbin went to Shanghai, Yuan Xiaobai was sleeping quietly in the bedroom, a long tube on her arm was connected to the hanging bottle hanging above her head, and the white liquid slowly flowed into her body, which was a nutrient solution used to sustain her life.

Every once in a while, a caretaker came to wipe her body, and after sleeping for a long time, she had already begun to develop bedsores.

Dr. Andrew said that her condition may not last for three months, which is worse than he had expected, and Xiaobai's body continues to make changes, and her biological age has deteriorated by at least two years compared to half a month ago.

"Wen Bin, I also consulted a lot of friends in the scientific community this time, and a sentence from one of my friends woke me up, and Dr. Andrew also found that Miss Yuan's eyeballs moved horizontally at a speed beyond ordinary people's degrees, and the brain waves showed that her thinking did not stop, but fluctuated violently."

"I just want to know the results."

Cha Wenbin said.

"The physiological phenomenon of time retrograde like Miss Yuan would not have been established medically,"

"But Professor Gu's friend suggested that Einstein's theory of relativity in physics has proven that time stops if the speed is close to light, and if it exceeds the speed of light, time will be reversed," Andrew said. Mr. Cha, Mr. Yuan, let me state again, this is science. ”

Mr. Yuan has been exhausted for a few days, and just nodded his head to show that Cha Wenbin had also talked about this before, but what does Xiaobai's reverse growth have to do with the speed of light?

Although he didn't go to school, he didn't know where in the world there would be something faster than light.

"There is one thing that can surpass the speed of light, and ordinary people can do it."

Gu Qinghe paused, then pointed to his temples and said, "Thinking!" In this world, only the mind is faster than the light, it takes 1.28 seconds for a beam of light to travel from the earth to the moon, and it takes 8.3 minutes for a beam of light to shine from the sun to the earth, but human thoughts only need to be instantaneous. ”

"Wait a minute."

Cha Wenbin interrupted Gu Qinghe's speech, and he said: "This is not only Xiaobai, me, you, and everyone present have thoughts, so why don't we reverse life when our thinking exceeds the speed of light?" ”

Gu Qinghe said very seriously: "That's because we live in a four-dimensional world and can only see the three-dimensional world, to put it simply: the one-dimensional world is two lines on a blank piece of paper, each person's own line, and the two-dimensional is the appearance of shapes, triangles, quadrilaterals, etc. Three-dimensional is like this cup, referred to as three-dimensional, there are three axes of XYz, and four-dimensional is to add a timeline to these three axes. Brother Cha, I remember when we discussed this issue at the top of Lion Peak, do you remember that Brother Xia saw another person who did to you five minutes later? ”

"Yes."

At the top of Lion Peak, Gu Qinghe was also there at that time, and he thought that the change at that moment came from some mysterious force that changed time and space, so that the two parallel worlds crossed at that moment.

"Well, now we see that Miss Yuan is indeed changing, this kind of change is something that we can't recognize, beyond our common sense, which seems to be unanswerable. But Brother Cha, I can easily let you see the time going backwards with your own eyes, do you believe it? ”

So saying, he untied the watch he was wearing, and then said to the hands: "Now this watch is fine, we can see that its second and minute hands are moving in a clockwise direction. ”

After that, he took another mirror, put the watch in front of the mirror, and then asked everyone, "Excuse me, is the watch in this mirror clockwise or counterclockwise?" ”

"Counterclockwise...... But everything in the mirror is the opposite! ”

He still wanted to argue about something, but Gu Qinghe said: "According to your Taoists, there must be yin and yang, so there is a world with the same timeline as us, then there must also be a world with the timeline backwards!" ”

"So! My friend gave me a bold guess that Miss Yuan probably fell into another world that we don't know yet, because we can only see the three-dimensional world and feel the four-dimensional world, and in this world, the higher the dimensional creatures, the more easily the world can change the lower dimension of the world, just like we can easily fold this blank paper, or easily add a line to a line. ”

"The extremes of things must be reversed ......"

Cha Wenbin remembered the last words that the Great Elder said to him, "But, she is obviously lying alive in front of us!" ”

Gu Qinghe said: "Sometimes don't believe our eyes, our eyes may deceive us. Science in the United States is developing rapidly, especially in physics and heaven, this is the latest issue of Science Weekly, a team of researchers from Harvard University proposed: any system is hierarchical, refers to the nature of things at different depths, it can only be grasped through people's abstract thinking, but it is the objective existence of external things. At the same time, this different levels of essence can also evolve into different stages of the development of things over time, and become a new physical three-dimensional space that people's senses can grasp. Therefore, the four-dimensional space should also be added to the hierarchical one-dimensional, and any real system is a five-dimensional space. ”

"To put it simply, any one of these five dimensions can be converted into other four dimensions. As a reflection of the essence of things, the space of human consciousness or psychology essentially belongs to the fifth dimensional space of these five dimensions - the hierarchical space! In the five-dimensional cosmology, time, space, and levels are symmetrical, just like the clocks we see in the mirror now. Because we are three-dimensional creatures living in four-dimensional space, so the human dimension can only reach three-dimensional, we know the existence of the timeline but we can't change it, but in the five-dimensional world, time can be materialized, just like the line I drew on the blank paper now, he doesn't know that in the hands of three-dimensional creatures, we can easily make it two-dimensional......"

"You mean she's different from the world we live in right now? We are three-dimensional and she is in a higher dimension? ”

Gu Qinghe said: "Just like one dimension can't see us, we also can't see creatures or powers higher than our dimension, but they can see us, Miss Yuan may be mastered by this high-latitude power, once at least you and her existed in the same dimension, but you were lucky to escape, because you are accelerating, so you aged ten years overnight." According to the symmetry theory, Miss Yuan will go to the opposite dimension of yours, that is, reverse time, that dimension we can't see, but she can see it, so through the brainwave test, the formal reflection of that dimension in her consciousness has not stopped for a moment. ”

"Space is a set, the most basic element is a point, an infinite number of points is a line, and one dimension is a line and a surface; When the linear surface body moves, it produces a shape, which is a two-dimensional body; The two-dimensional body is folded to produce the three-dimensional body; The motion of the three-dimensional body produces the four-dimensional body where time is located, and so on. To put it simply, the five-dimensional is due to the four-dimensional motion, and if the four-dimensional space can be folded in half, then the so-called nothingness after the fold will be filled by the four-dimensional motion. When an object moves faster than the speed of light, time reverses, the so-called negative time; The space will also correspondingly return to the past space, which is the so-called negative space, at this time, the object will enter the negative space-time, and the space-time reversal or space-time reversal, so that the object will achieve teleportation, so you now understand why your friend Ye Qiu suddenly appeared somewhere all of a sudden, and the same is true of your fat friend, you both have the ability to enter and exit that world, but Miss Yuan is lost, and the others are lucky to come out. ”

"I ......"

Cha Wenbin was completely impressed this time, what Gu Qinghe said was the highest science today, but it was not difficult for him to understand it at all.

Gu Qinghe said: "Brother Cha, these things I am talking about are just discovered in the past two hundred years of modern civilization, the land of China Shenzhou can now be verified with a history of 5,000 years, and what I have been studying is ancient China 5,000 years ago, what kind of country China was at that time, no one can tell the way, for example, your Taoist Taiji diagram, the ancients 10,000 years ago were able to draw such exquisite patterns, is it the same as the symmetry of the five-dimensional space I talked about today?" ”

He patted Cha Wenbin on the shoulder and said, "Now the answer is clear, it is very close to you, we outsiders have no way of knowing how to enter that world, and you have already demonstrated its existence several times. Find her in that world in her own timeline, and then the other way around, then everything will return to normal, otherwise any drug will only be superficially prevented. If you can stop yourself, you must be able to stop him. ”

"But...... I"

Cha Wenbin finally told the truth: "I...... I was saved by a girl......"