The old cat raised the manuscript paper in his hand and sat back, it was obvious that Tang Yue was proud of himself as a manure machine, he was the only creature on this barren planet that had the ability to produce organic fertilizer quickly, and his importance in this regard was incomparable, Tang Yue had finally found a field where he could completely outperform the old cat - in pooping.

But the old cat didn't want to compete with Tang Yue in such a boring field, unless the latter's stool could evenly spread over the entire Ihidi Plain, it would be meaningless in terms of environment and ecology.

Tang Yue took out a biscuit from the cabinet, poured a small glass of water, kicked and walked around the old cat's back, and bent down to look at his screen.

"What is this?" Tang Yue pointed to the picture on the screen, a blurry patch of brownish, yellow and black, he couldn't see what it was, "Remote sensing pictures of the Martian surface?" ”

"Nope." The old cat shook his head, "It's something more beautiful." ”

"What?"

The old cat drags the mouse to zoom the picture.

Tang Yue saw clearly this time, it was a bewitching ocelot, lying on his side on the boulder, glancing back.

"When has it been since you were still looking at this kind of thing? Aren't you refining the docking scheme? Aren't you doing the math? Tang Yue was dumbfounded, "Actually, you've been looking at the little female cat?" ”

"It's a male ocelot."

"It's still a tom!" Tang Yue was almost heartbroken.

"What are you yelling about, it's just a screen saver on my computer monitor, picture from National Geographic, the workstation is doing background calculations." The old cat casually tapped on the keyboard, and the screen full of numbers and charts flashed, "but the work was very difficult, and I devised many schemes, which were overturned at the feasibility stage...... I have to say that this is really the most difficult wedding in human history, the most difficult to cross a hundred kilometers. ”

Tang Yue sat down with lunch, unpacked the vacuum packaging of the biscuits, and took a small bite.

"Girl, have you eaten?"

"Ate a little bit." Mai Dong replied, "I'm not too hungry. ”

"What about oxygen and fresh water?"

"Oxygen can last 280 hours, and fresh water is enough." Mai Dong said, "You don't have to worry about me, I will definitely be able to hold out until the Tianzhou spacecraft arrives." ”

She said this as the Union Space Station was passing over the surface of Mars, and the harsh sunlight was bursting from the horizon behind her, and it was another dawn, but in half an hour, the sun would set.

In low-Earth orbit, Dawn is forever chasing Dusk, and as the altitude of the space station drops, Dawn finally catches the tail of Dusk.

"Tang Yue, do you believe in the existence of parallel universes?"

"Parallel universes?"

"Well, I read Mr. Stephen Hawking's "The Universe in the Shell" and "A Brief History of Time" a long time ago, and the book said that there may be more than one universe, and there are many parallel universes in this world, and some universes may be very similar." Mai Dong said, "Do you think there is a universe where the earth has not disappeared? ”

Tang Yue took a bite of the biscuit, no one knew whether the parallel universe existed, let alone prove, and of course it could not be falsified.

"I think there is."

Anyway, it's a nonsense without a theoretical basis, and it's not as good as romanticism.

If the earth was really skewered by some alien civilization, then in other universes, is there a situation where this shot is crooked? The muzzle of the gun deviated from its original angle by a few differentials, so the bullet passed by the Earth.

Tang Yue then thought that since there is a universe where the earth is intact, then there must also be the following situations:

A single shot exploded a quarter of the Earth's universe.

A single shot exploded half the universe of the Earth.

A single shot exploded three-quarters of Earth's universe.

At the same time, the earth was exploded in the infinite universe, and Tang Yue and Mai Dong were in the universe where the earth was completely exploded in this infinite universe.

"If there really is a universe where the Earth is intact, then in that universe, we should have returned to the Earth." Mai Dong said.

"Yes." Tang Yue nodded, "Let's go back to our respective homes to find our own mothers." ”

If the Earth had not disappeared, then the relationship between Tang Yue and Mai Dong would have ended at the end of the Mars mission.

"No, no, we can push back the clock a little bit further - if parallel universes are born out of choice, for example, if you are going to get the glass of water in front of you now, and you use your right hand, then the universe will split at this moment, and another universe will appear, and in that universe you will hold the cup with your left hand." Mai Dong shook his head, "Every choice you make will give birth to many, many parallel universes...... Then there will always be a universe in which we will meet again. ”

Tang Yue was stunned.

"I was born in Guangzhou, Tang Yue, where were you born?"

"Hefei, Anhui."

"Okay, then I'm in Guangzhou, and you're in Hefei." Mai Dong stretched out his finger and dotted in the air, as if he had dotted on an invisible map, one in Guangzhou, one in Hefei, two cities, 1,200 kilometers apart, "And then...... I went to primary school in Yuexiu District, Guangzhou, where were you at this time? ”

Tang Yue tried to recall, "Luyang District. ”

"When I went to primary school in Yuexiu, you went to primary school in Luyang District, Hefei City, we were all primary school students, carrying schoolbags to school every day, you didn't know me, I haven't seen you, we don't know each other." Mai Dong smiled, "Later, after graduating from primary school, I went to Huafu in middle school. ”

"At that time, I was in Hefei No. 45 Middle School, and I was one level higher than you."

"So at this time, we are all middle school students, have you ever been away from home when you were in middle school?" Mai Dong asked, "Have you ever been to Guangzhou?" ”

"I've been to Sanya."

"I've been to Qingdao, Tang Yue, do you believe that we could ever pass by?"

Tang Yue was stunned, he didn't know what year and day Mai Dong went to Qingdao, but Guangzhou went to Qingdao to the north, and he went to Sanya to the south, who can know if they were on the same railway on the same day? Tang Yue recalled that his young self was sitting on the chair of the high-speed train, curiously lying on the glass window and looking out, the white high-speed bullet train came from the opposite side, whistling past, in the opposite carriage, could there be a young girl, who was lying on the window looking at himself?

"Later, in the college entrance examination, my first choice was Zhejiang University." Mai Dong said.

"I also applied for Zhejiang University, but unfortunately I didn't get in."

"There will definitely be such a universe, he listened carefully to every class you slept in, he completed every homework you failed to complete, he did every question you did wrong, and then he was successfully admitted to Zhejiang University." Mai Dong said.

"Then that's too unlikely." Tang Yue laughed.

"But it's still there."

Tang Yue couldn't help but reverie that his encounter with Mai Dong in another universe could be a completely different story...... They don't even have to be astronauts on Mars missions anymore, he can be a senior who welcomes new students, standing at the gate of the academy to receive the materials handed over by the short-haired girl in a panic, or he can be a senior in the club, handing out flyers to the dazed first-graders at the Battle of the Hundred Regiments, and then patting her on the shoulder and saying welcome to join, he can even go out on a classless afternoon, look around and not look at the road, and bump into a person of unknown gender who is carrying a schoolbag tightly on his back.

"Don't you walk with long eyes?"

"Obviously you hit me first!"

The wind blew through the catkins, revealing a pair of light brown translucent eyes under the short black hair.

Crossing the vast sea of 1.5 billion people, more than 1,000 kilometers apart, hundreds of millions of forks in the road, there will always be a Tang Yue and a Mai Dong, who have made all the right choices and reunited in a certain universe.