The first thing to tidy up is food and fresh water.

After getting the supply of the Tianzhou 37 cargo spacecraft, the food reserves in the Kunlun station were quite sufficient, but the capacity of the Martian stray dogs was limited, and the old cat and Tang Yue could not carry them all into the car.

"Tang Yue, how much food do you need to bring on the road?" The old cat faced with a mountain of canned soft bags and rehydrated food, I don't know where to start, this also wants to bring that and I want to bring, but the pocket is too small to fit, this is a happy trouble, think about the Kunlun station when the supply shortage had to rely on compressed biscuits to survive, it is really dry when the drought is dying, waterlogging when waterlogging.

"Fifteen days' rations are enough."

Tang Yue was outside the garage, the geological experiment module of the Martian stray dog had been unloaded, and he was emptying all the instruments in the experiment cabin.

The experimental module is the only airtight cabin that can be moved in the Kunlun station, it comes with two pairs of wheels, and it can run with it when it is hung on the bow of the rover, and it takes at least nine days to go to the designated place of coordinates, and Tang Yue spends most of the time wearing Mingguang armor during these nine days, but he also has to eat, drink, and Lazar.

"Fifteen days?"

"Oxygen is only enough for nine days." Tang Yue threw out the heavy spectrophotometer and smashed it on the sand, "It's enough to bring food for fifteen days, the dead won't eat, anyway, I can't come back, there is no point in bringing too much dry food, it just increases weight and slows down the travel speed of stray dogs." ”

"What about the taste?"

"Except for pickled cuttlefish, everything else will do."

Tang Yue turned around and went into the experimental cabin with a clanging bang, and after a while, he took out a computer monitor and threw it on the ground outside the cabin door.

The old cat picked and counted one by one, Tang Yue sweated like rain outside the garage, the latter regained his energy and drive, and his work was quite quick, unlike the three days after the space station crashed, Tang Yue was almost a walking dead after the space station crashed, sitting still, looking numb, not eating or drinking. In a sense, the letter from unknown sources prolonged Tang Yue's life, and it gave him a reason to persist in living.

"One...... Two...... Three...... One day, two days, three days...... Don't pickle cuttlefishDon't pickle cuttlefish......"

The old cat silently counts, it tries to choose small size, light weight, high energy food, fresh water is all carried bottled water, each bottle of water is 600 milliliters of volume, under normal circumstances, two bottles of water are enough for a day to drink, and food is equivalent, fresh water should also be prepared for fifteen days, fifteen days is thirty bottles, the fresh water in the water tank of Kunlun Station is very precious, but at this juncture can only give up.

It packed the food and fresh water separately, arranged Tang Yue's daily recipes quite carefully, and labeled them in turn.

"Tang Yue."

"Huh?"

"If you're willing to wait, I can go first, at most a month, I'll be back, and when I'm sure it's safe, I'll come back and pick you up......"

"I don't want to wait." Tang Yue squatted on the floor and removed the screws from the legs of the cabinet.

"Understood."

The old cat didn't mention it again.

Outside the garage, Tang Yue emptied the experimental cabin and began to carry the solar panels.

Solar panels are the main source of electricity for Martian stray dogs and old cats, the last time the old cat went out to find Chelome took away 30 panels, it took nearly ten hours a day to charge, this time they want to take all the panels away, try to shorten the daily charging time, but these things are big and heavy, can only be bundled and put on the board truck to haul.

The final Martian stray dog will be a Thomas train, with an experimental cabin dragged behind the front of the locomotive, a board cart pulled behind the experimental cabin, food and fresh water stored in the experimental cabin, and solar panels tied to the board car, which is actually overloaded for the Martian stray dog, but this is its last mission in this life, and it can only be wronged to be squeezed.

The old cat finished sorting out the supplies, stepped out of the garage, and saw Tang Yue sitting on the ground not far away by the wheel of the stray dog, tilting his head, not knowing what he was looking at, with his hands on his knees.

"Is there any smoke?" Tang Yue knew that it was the old cat coming, so he didn't move and asked casually.

"You smoke?"

"No, none of us smoke, Orion crew members are not allowed to smoke." Tang Yue replied.

"Smoking is not good for your health." The old cat sat down against him and looked in the direction of Tang Yue's gaze, only to see the gray sky.

"I know it's not good for my health, my dad never let me smoke, he used to say that if he caught me smoking, he would break my legs, but he smoked harder than anyone else." Tang Yue said, "Now I know that there are probably not many people in this world who really like to smoke, but sometimes what can I do if I don't smoke?" I can only see an incompetent and confused self. ”

"What is a cigarette, I recommend you a stronger one."

"Huh?"

"Have you seen the hydrogen and oxygen engine of the Tianzhou spacecraft? The diameter of the nozzle is one meter thick, and the thrust is hundreds of tons, that one is strong enough, big brother, you pump that. ”

Tang Yue smiled silently.

He pulled the envelope out of his pocket again and looked at it in amazement.

He had read this letter hundreds of times, and he could even memorize the contents of it, but Tang Yue still didn't know whether it was true or false.

It claims to come from an incredibly advanced civilization.

But it doesn't have any characteristics on it to prove it, if it can glow all over its body and talk on its own or fly around in the sky, then Tang Yue will admit it - but it is just a completely ordinary letterhead, it can't prove that it comes from an extraterrestrial civilization, but it can't prove that it comes from an earthly creature.

In the words of the old cat, if such advanced intelligence really existed in the universe, it would have been easy for them to make wood pulp stationery and learn to use human language - now someone slaps such a piece of paper in front of you and says it comes from the other side of the galaxy, and as much as it sounds, you can't falsify it.

Of course, this may also be an illusion created by the old cat.

The old cat doesn't always tell the truth to Tang Yue, it hid the truth when the space station crashed before, and in order to protect Tang Yue, it could do anything...... For example, forging a letter from an extraterrestrial civilization, nonsense about a non-existent coordinate, claiming that the earth can be restored to its original state, so that Tang Yue, whose heart is like ashes, will be reinvigorated.

If this was really the old cat's doing, then there was no doubt that it had succeeded, and it had succeeded in extending Tang Yue's life for at least nine days.

"Old cat, you say...... Do you really believe everything this letter says? Do you really believe in the existence of any advanced civilization? Do you really believe that the Earth can be restored to its original state? ”

The old cat took the envelope from his hand.

There was silence for a few minutes.

Then it shook its head.

"I don't believe it."