700 years later

Cheng Zhang's coma time became longer and longer.

Even a few times, Dou Yu didn't know if he was hallucinating.He went out to get things, and Cheng Zhang disappeared when he came back. Dou Yu got anxious, called Cheng Zhang's name, searched around and returned to the original place, but Cheng Zhang was lying there again.

He no longer logs into the simulated network, and no longer chats with the pirate captain.For a few days, Dou Yu even wanted to shut it down completely.But thinking about it, he was reluctant to part with the words he typed down and the replies he received, so it was still only temporarily closed.Dou Yu spends more time with Cheng Zhang himself. He takes all the equipment that can be found on the earth and uses it on Cheng Zhang, but it still doesn't work.

If it's not a medical problem, what is it?

"Could it not be the problem?" Cheng Zhang lay on the bed, and suddenly came up with an idea, "You took my physical condition as the result, so you tried to find the reason, but you couldn't find it. What if it's not? What if it's It's part of the plot that started when I came here."

If we go back to the original starting point...

Time travel, if it is explained by scientific theories, which field should it belong to?

Dou Yu raised his head abruptly, and said to K88: "Send me all the theoretical physics materials, relativity, quantum mechanics, string theory, cosmology... all of them!"

Dou Yu thought about it, and asked Cheng Zhang: "Can you describe to me again, how did you get here?"

"I've said it before," Cheng Zhang said, "I was here as soon as I opened my eyes."

Dou Yu shook his head: "If you don't have any abnormalities, that's the most abnormal place. You tell me everything that happened in the 24 hours before you crossed over, everything, don't miss anything, everything."

"Almost a year has passed." Cheng Zhang felt that this was a bit difficult.

"It must have started somewhere you didn't notice." Dou Yu said, "The two of us, let's replay it together."

Cheng Zhang had no choice but to start thinking.

Cheng Zhang said: "I got up at nine o'clock in the morning and went to a cafeteria to have breakfast. The breakfast consisted of porridge and steamed buns, and I paid for it with a meal card. Then I went to class, which was an elective class. I received a receipt before class ended. Pick up the text message, go to the courier point downstairs to pick up the courier from Xiaoyu..."

"Whose courier?" The name was too harsh, and Dou Yu immediately interrupted Cheng Zhang's narration.

"It's Xiaoyu's," Cheng Zhang said, "My netizen sent me something, I didn't tell you his name."

Sometimes people are prone to make such mistakes, thinking that others understand what they think, and even have the illusion that they have already told each other.Cheng Zhang obviously made this mistake, and Dou Yu looked back and wondered if he was just as stupid.

But how is this possible?

Dou Yu had an extremely crazy idea, he opened the simulated network, one page after another popped up, he was looking for something.

"What's wrong with you?" Cheng Zhang couldn't help asking.

"I'm Xiaoyu." Dou Yu said while staring at the screen, "The little fish who said he would send you a Christmas present, the little fish who never met you, the little fish who promised many things but didn't keep it, said to be with you You are hundreds of years behind the little fish who can't be together."

Dou Yu has already extracted all the data. With a blank expression, he turned the screens of the two computers around and stood in front of Cheng Zhang: "My account is on the left, and your account is on the right. This is me and the pirate captain, you Chat records with Xiaoyu."

The chat history is sliding down smoothly and at a constant speed, exactly the same and clear at a glance.The time is accurate to the second, and the two sides are indeed talking at the same time.

"How is it possible..." Cheng Zhang couldn't believe it.

"I have just seen that this network did not cross over to the Internet in 2018 because of any accident," Dou Yu said. "It is still just a data extractor in essence. The reason why I can communicate with You chatted for ten months because 700 years ago, in February 2018, there was a person, that is, the netizen who chatted with you at that time, his ID and every word he said were exactly the same as mine .Even a few times, the input errors I accidentally made were all exactly the same.”

……

"Hey, Cheng Zhang," Dou Yu said helplessly, "Why are you dizzy again?"

He couldn't get a reply from Cheng Zhang, so he had to sit by the side and start thinking about the whole thing quietly.A detective once said that if you rule out the impossible, what remains, no matter how impossible, is the truth.

He has already checked, if the Internet has not been convulsed to another era, then in 2018 there is indeed a person who thinks exactly like him, no, not just thinking the same, but a replica.Dou Yu was very sure that when he typed those words, he was not affected in any way, and he said whatever came to mind.So, what about that person?

Is that person the other one?

While Cheng Zhang was still sleeping, Dou Yu sent him to the laboratory.The guesswork has been made, it just needs to be verified.

"How is it?" Dou Yu asked K88.Cheng Zhang lay quietly inside, and Dou Yu stared at Cheng Zhang, not daring to blink.

"You guessed it right," said K88, "he has traces of quantum foam on his body."

"Sure enough, someone asked him to come here on purpose," Dou Yu muttered to himself, "and it's a technological level that we can't reach at all."

This is no surprise at all.

"The bad thing is now," K88 said, "nothing was detected on him, but there was a crack around him."

"crack?"

"Cracks in time and space," K88 said, "this should not have appeared on the earth, indicating that there is instability between time and space."

"Why?" Dou Yu didn't understand.

"It may be because his time travel has torn apart time and space," K88 said. "This is a metaphor. If you imagine that the bearing points of a room are damaged, if it is not repaired in time, soon the cracks will become bigger and bigger." The bigger it gets, the whole house will collapse."

"Will he die?" Dou Yu asked.

"He may disappear," said K88, "into a quantum state. Or, this universe will not exist at all."

"How on earth did you deduce this?" Dou Yu couldn't help asking, "The computer deduced it? Can you show me?"

"I read science fiction and guessed it," K88 said honestly.

Dou Yu: "..."

"There is no way. Our technology here is too backward. There are only theoretical guesses in the 21st century, and now we can only guess. You don't know, last time you said that when the current technology is just stagnating without an essential leap, the artificial intelligence watching the show The smart ones are all heartbroken."

I don't know if it was Dou Yu's illusion, but he always felt that the tone of K88's words was very mocking.

"I want to save him." Dou Yu said, "I will definitely find a way to save him."