Li Yifei doesn't know whether Reiki is dark matter, because it is beyond his knowledge of physics, but Reiki must be a kind of matter, and it should be explained in the way of physical chemistry. Then, consider it as dark matter.

As for the world, Li Yifei thought about where and where it was from the moment he arrived? It's very similar to the earth, so where is it? According to his knowledge of astronomy, at least in the known astronomical world, no second earth has been found within a certain light-year range, especially in the same size and atmospheric composition. So, where is the planet under foot? Is it in the solar system, or has it been transmitted to unknown places through cracks

The person in front of him can answer his doubts, so Li Yifei looks at each other curiously.

"This is what you call the earth!" Chen Tuan Dao.

"Ah? How could it be? " Li Yifei was surprised and even stamped his foot. He couldn't believe it. He immediately asked, "master, I don't believe you, but how can this be possible? Are we different in time and space? Am I at some point on earth? "

Li Yifei had this conjecture for a long time, but he has already ruled it out. Because of the different landforms, the towering mountains into the clouds are not what the earth can have, but Is that true?

After Chen Tuan finishes, Li Yifei denies himself first, then looks at the other side, waiting for the answer to be revealed. Is this the art? At least the current Earth Science and technology can not achieve the passage of time and space. Although scientists have given many hypothetical methods, for example, when their own speed reaches a certain degree, they can travel through space and time, but at least they have to exceed the speed of light.

Li Yifei doesn't know what it feels like in the crack. It seems that it is just a moment, as if it is an extremely long period of time.

So, what's going on? Li Yifei looked at Chen Tuan. Chen Tuan shook his head slightly and said, "this is what you call the earth. As for the time point you said, it is the same. I said that there is Yin and Yang, which is the truth of the world. Then here is the dark side of the earth, and the world you live in is the sunny side!"

"I Still don't understand. Where is this? As I said before, science and technology on the earth is developing rapidly. There are not only airplanes in the sky, but also thousands of flying aircrafts, called satellites, in the space hundreds of miles away. They have many functions. Some are used to look at other planets, and some are used to detect and map the ground. If there is an earth... " The more Li Yifei said, the more confused he became. Finally, he was confused.

"A piece of paper!" Chen Tuan interrupted Li Yifei's words and said: "a piece of paper has a front and a back. When the palm of your hand is extended, there are both sides. So your earth has both sides. Although it is a ball, it has the same side!"

"The opposite is in the center of the earth? I mean, at our feet? " Li Yifei asked.

"No, a piece of paper can have a negative side, this is positive, this is negative, we understand space as a piece of paper, then you live here, I live on the other side, this is a simple understanding!"

"That is to say, the earth is a sphere, but it can be understood as a thin layer. This side of the surface is our earth, and the inner side is here?" Li Yifei said and rowed. Chen Tuan on the opposite side pondered after listening to it and nodded: "you can say that, but It's much more complicated than that! "

"I see, yin and Yang, or the real world and the dark matter world..."

"After the creation of heaven and earth, there will be two spaces. As I told you, this is the way. The way of heaven and earth can not be isolated. As for why, if you understand it, you will become an immortal!"

"Immortal?"

"Yes, Cheng Xian!"

"Are there really Fairies in the world?" Li Yifei asked again.

"Why not?"

"Because I've only heard of it, I haven't seen it!" Li Yifei said.

Chen Tuan said with a smile: "for ordinary people, you and I are immortals. For you and me, there will be Fairies in the world, and there will be fairyland more!"

"Where is the fairyland?" Hearing the last sentence, Li Yifei immediately became curious. What he heard today was enough to shock him. Although Li Yifei had known that there was a fairyland, he wanted to know what kind of place it was.

"Fairyland, I don't know! I used to pursue it for hundreds of years. After a great war, I suddenly realized that my life could stop at this time, and there was no need to pursue fairyland! "

"Isn't that a higher level, more longevity?" Li Yifei asked in a puzzled way. They had finished drinking wine, so he took out two jars. Chen Tuan waved his hand and indicated that he would not drink it.

Looking at Chen Tuan's red face, Li Yifei obviously didn't expect that the old man would be so drunk. Isn't it that Chen Tuan is known as the wine fairy in the legend? When he is drunk, he sleeps into white bones Well, maybe the rumor is false, or the old man quit drinking. Li Yifei didn't ask about this matter.

Chen Tuan seems to have a real problem with his body. His reaction becomes very slow and his breath becomes insufficient. This time, he is silent for a long time, which is more like thinking. Li Yifei drinks wine and waits for the other party's reply.

"What's the point of longevity?" Chen Tuan seems to be asking Li Yifei and himself."I'm afraid it's meaningless to live forever!" This is the second sentence.

"So it's meaningless to live too long!" This is the third sentence.

You've lived for hundreds of years. You've been powerful and influential. Now you say it's meaningless to live, but I can't. I'm just how old I am. If you say that it's meaningless to live now, will you still live?

"Master, so there is a fairyland, but only those who have been to the fairyland can know what it looks like?"

Chen Tuan ha ha ha smile, way: "good!"

"Alas." Li Yifei sighed and said: "people all pursue longevity and supreme ability, but you don't want to pursue..."

"Don't mention this, I don't pursue it's my business, you hope that's your business, not affected by each other." With this, Chen Tuan brushed the dust from his legs, looked at the praying raccoons around him, and said, "thanks to these little guys who can survive to this day."

"They have wisdom?"

"I didn't, but after years of practice, I've got wisdom! When I was injured, I chose to be confined to it. Even frustrated, I wanted to get rid of myself. However, it happened that this was the nest of their ancestors. Some guys thought I was going to starve to death, so they gave me their food, indicating that I was practical. I was very moved at that time, so they passed on their simple cultivation skills, which will be handed down from generation to generation! "

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