In 1942, the year 2495 of the Eastern Era, the Chinese observatory built in Chóngqìng for the purpose of searching for parallel universes was put into operation, and the existence of a parallel universe was successfully discovered, thus confirming this scientific conjecture. The scientific community was shocked by the observations of this neighboring universe, because the history of the earth in this neighborhood, which was almost identical three hundred years ago, with the same celebrities, the same country, the same language, the same art, but in the last three hundred years it has become completely different.

The science and technology of this neighbor is very backward, and the Europeans found that in another universe, they were still fighting with fossil energy chariots, a primitive weapon, in 1942, and they were still close to ignorant of nuclear energy, and as for the development of outer space resources and immigration, they had not even touched the door.

Compared with Europeans, the Chinese feel more lost, and after the detailed observation report was disclosed to curious citizens, a media commented on China in this neighboring universe: "Like us, China in that universe also has rich resources and the largest population, but in the last three hundred years, China has not made the greatest contribution to the progress of human civilization and science, and it can even be said that it has made almost no contribution, which is really a deep regret, and a huge waste and sadness." ”

The Chóngqìng observatory operated for a full seventy years. By 2012, the new observatory built on Titan was completed, making it more visible, safer and more efficient, so it was time for the Chóngqìng observatory to be shut down.

The head of the observatory was asked by the media at a press conference: "Seventy years ago we didn't know, but now we know that the observation of parallel universes will cause interference to the neighboring universe and the local universe, right?" ”

The person in charge replied: "Everyone knows that time can also be seen as a wave, the time wave of our universe collapsed into our history, and the time wave of the parallel universe collapsed into their history. Yes, the design of the old observatory is flawed, and its observation window causes a slight interference between the time waves of our two universes. ”

He asked, "How drastic is the interference, and how will it affect us?" ”

Answer: "Very, very small, mathematically, so small that it can be considered to have no effect." ”

"Can you elaborate on how small it is?"

"Yes, there will be no interference when making observations. However, when the observation window of the old observatory is opened and closed, the time waves of the two universes will be disturbed. When the Chóngqìng Observatory opened, the moment the window was opened, a marble desk from our universe was thrown over and dropped into the Pacific Ocean in the opposite universe. We predict that at the time of closing, there may also be a maximum of 200 kilograms sucked back. It could be some dirt, or some rocks, most likely air. ”

"Will fall into our Pacific Ocean?"

"Not really, it will probably be sucked back to the location of the observatory. It's hard to say where it came from, but it's almost certainly from the surface of the opposite universe. ”

"At what speed will it hit our planet? Is the observatory ready for protection? ”

The person in charge smiled: "There will be no speed, and the observatory does not need to do any protection, the location is certainly at the location of the observatory, but the time is not easy to say, the interval is about plus or minus a thousand years." You see, in the past or in the future for a thousand years, there were dozens or hundreds of kilograms of dirt or stones in the Chóngqìng Observatory, and the most likely thing was air, followed by water, after all, there was the most water on the surface. This is the impact on our universe, and it is as small as it is on them. ”

One last question: "Will this disturbance be detected by the universe opposite?" ”

"Absolutely not. First of all, their technology is far from reaching the level of a hundred years ago, and secondly, the moment when the most violent disturbance is very short, even if it happens around a certain person......" The person in charge stressed again that 70% of the earth's surface is covered by water, even the land also has a large area of wilderness and vegetation, and the possibility of happening near a person is very small, so small that it can be considered that it will not happen: "In terms of human senses, it is just that he will feel a flash of purple light, so fast that he thinks it is an illusion." ”

The person in charge took the trouble to explain again and again, telling the media present not to worry about the sky: "This kind of interference has no impact on our universe and history at all. ”

After the briefing, the Chóngqìng observatory was closed as scheduled, and no one knew how much of an impact it had on the disturbance of the time waves.

……

The year 1658 is the twelfth year of the Yongli calendar of the Ming Dynasty.

On the second day of December, Deng Ming, who looked tired, sat alone by the river, three days ago he was a student at the Academy of Fine Arts, but now he seems to be a homeless person.

"The priority, well, the priority is to find a razor, and then ...... And then again. Deng Ming thought silently in his heart, although he hadn't eaten for two days, he thought that his mind had calmed down a bit......

"Purple light flashed, as if it was an illusion," Deng Ming, who was sitting by the river, recalled his experience, until now he was not sure whether it was purple light or not, the speed was too fast, and then the surrounding scenery changed completely, and he ran from the bustling metropolis to the wilderness at once, and it was hundreds of years ago, and he also moved thousands of kilometers geographically.

"Why did you come to more than 300 years ago?" In the past two days, Deng Ming's mind has exploded when he thinks about this question, but he still can't understand the point: "This shouldn't be my original universe, right?" Theoretically, the solar system revolves around the center of the Milky Way, and I don't know the speed, but it must be fast; The earth revolves around the sun again, and the earth three hundred years ago should not be in the same place, if it was the original universe, I should have been thrown into a vacuum, it is impossible for me to still be on the earth, and I may not even be in the solar system......"

After rejoicing that he was still on Earth, Deng Ming decided not to continue thinking about why he was here for the time being, but to find a razor and shave his hair first. Deng Ming asked a few woodcutters and hunters, and they all said that it was now the fifteenth year of Shunzhi, and Chóngqìng had already ruled under the rule of the Qing Emperor: "If this is a joke made by aliens or future people, maybe I still have a chance to go back, and the top priority is not to be killed indiscriminately by the barbarians." ”

Despite being aware of the most important problem at hand, Deng Ming still couldn't figure out how to get a razor, Deng Ming estimated that there must be a merchant in the city, but he didn't dare to go without shaving his head, but he didn't know how to find a knife when he stayed outside the city.

As he pondered how to break this seemingly unbreakable circle, the sound of drums was heard in the distance. Deng Ming looked in the direction from which the sound came, the drums getting louder and louder, and soon he saw the boat coming towards him from the river. One ship after another, and the drums were coming from these boats.

The boat was getting closer and closer, Deng Ming did not dare to continue to sit by the river, he ran quickly to the bushes behind him, hid behind the trees and lowered his body, carefully observing the movement.

Finally, Deng Ming was not only able to see the flag on the ship, but also the figure standing on the boat. The people on the ship looked like samurai, all carrying swords and some wearing armor. These people were neatly beating their shields with their weapons, Deng Ming just thought it was the sound of drums, but it was actually the loud sound they made.

"The red flag, there is also the word 'Ming' written on it!" Deng Ming couldn't believe his eyes, staring at the bright red flags on the ship and the soldiers' clothing, and some doubted whether the current era was really the Shunzhi period. Deng Ming thought that only Taiwan still had the Ming army in this year. The mystery in his heart became bigger and bigger, and he couldn't help but spit out the thoughts in his heart, and said to himself: "Is there still a Ming army in Sichuan?" ”

"Why not?"

A question came from behind, both close and loud, and Deng Ming, who was caught off guard, was so startled that he almost jumped up. He turned around sharply, and found that there were two people standing behind him, both of them in tight clothes, one with his hands free, and the other with a bright steel knife in his hand, with only a scabbard hanging from his waist.

The cold light on the steel knife reflected in Deng Ming's eyes, making him, a student who had never been so close to the big knife in his ordinary life, suddenly speechless, feeling his throat involuntarily tighten, and swallowing a mouthful of dry saliva.

The two people on the opposite side glared at Deng Ming, and the man with the big knife slowly raised the steel knife and inserted it back into the sheath. When the sword light disappeared completely, Deng Mingcai took his eyes off the knife handle and turned back to the face of the person opposite, only to feel that it was cold behind him, and he was already sweating.

"I just said it was a refugee." The man with his empty hands looked Deng Ming up and down, with a smile on his face, and said to his companion beside him.

It turned out that both of them were scouts sent to the shore by the Ming army, and just now they saw Deng Ming's strange clothes and sneakily hiding in the grass to spy on the army, so they quietly touched behind him. If Deng Ming had a money rat tail on his head, most of these two would have taken up their knives and eliminated him as a spy of the Qing army. However, when he saw the short hair on Deng Ming's head, the sentry with his empty hands concluded that he was a refugee who had shaved his head and had just escaped from the place controlled by the Qing army. The other was more cautious, and pulled out his knife when he approached Deng Ming.

However, Deng Ming's blurted out the word "Da Ming" made the two finally put their minds at ease, and those who still called the Ming army like this in these years must be people who cherish their homeland. The sentry with a smile on his face looked at Deng Ming's chin, which didn't have much beard, and asked, "Little brother, where are you from?" ”