Tang Yue dragged the cable up the hillside, standing in the sunset and looking ahead, the horizon under the light brown sky did not fluctuate, the old cat said that the Ihidi Plain is a huge crater, born 3.9 billion years ago under the impact of a huge meteorite, with a diameter of more than 1,500 kilometers, such craters on Mars there are hundreds of thousands.

"What are you looking for?"

"Look for anything suspicious." Tang Yue stretched out his hand and pointed forward, "Is our goal in that direction?" ”

"Yes." The old cat copied its forelimbs, "But it's still a hundred kilometers away from us, what do you expect to find?" Such a distance has long exceeded the limits of human eyesight. ”

"Isn't there still you?"

"But Mars is a sphere, and even if there is a Burj Khalifa standing on that coordinate, it is now sunk below the horizon, and we can't see that far even with the Haier telescope on our shoulders." The old cat shrugged.

Tang Yue was a little disappointed, they had traveled so long in the desert, there were always only the same hills and deserts in front of them, and there had never been anything that could make people slightly interested.

There is no building like the Burj Khalifa on Mars, if there is, it should have been discovered a long time ago, and how many probes have been dropped by humans in the past few decades, probably even human beings themselves do not know - the small satellites brought by the Mars landing program are counted in sacks, sacks of space junk are shaken out by the Orion spacecraft in Mars' low earth orbit, and each probe is related to the graduation plans of thousands of undergraduate and master's students.

"Aren't we going to fight a lawsuit against them?" Tang Yue asked, "Could it be that the destination is the court?" ”

It is impossible for a court with tall pillars like the one on Earth to exist, and Tang Yue feels that it is more likely to be a circuit court.

In today's era, circuit courts are quite rare, but in the backward and remote western mountainous areas, in order to take care of the parties who are inconvenient to travel, the judges will still carry the national emblem on their backs, wade through mountains and rivers, brave the blue sky and red sun, take local materials, and set up two tables and chairs, which is a simple open-air court.

In Tang Yue's imagination, when they arrived at the coordinate location, what was waiting for him and the old cat might be such a circuit court - a strangely shaped flying machine descended from the sky, and then the hatch slowly opened, and the little green man with short arms and legs carried the table and walked down the stairs with a hum, the little green man set up tables and chairs on the sand, and then sat down in turn, among which the one sitting in the middle was shocked and shouted: Who is the person in the hall who sues this official?

"Maybe it's a spaceship or something." The old cat said, "Who knows? This is probably the only problem we have faced in our lives that we cannot refer to the experience of our predecessors. ”

Tang Yue stood on a high place, in front of him was a gentle downward slope, at the bottom of the slope there was a shallow ditch, this is probably the trace of the flow of water, at a certain time of the year, there will be water flowing here, and the gravel has been polished more rounded by the water flow over a long time.

The sun is about to set, the old cat went back to clean the solar panels, anyway, there are no days to spend in the end, the panels do not need to be put away at night, and when the sun rises tomorrow morning, they can continue to charge, saving the trouble of moving around.

Tang Yue sat down cross-legged, trying to support his head, but found that Ming Guang Kai couldn't put on this pose, so he had to give up, put his hands on his knees, and was thinking about the little green man's circuit court...... As a pure science and engineering man, he has only seen the appearance of the court on TV, in fact, Tang Yue is not even clear about the specific steps of the lawsuit, in Tang Yue's impression the image of the judge and the auctioneer can probably coincide, because they are both holding a small hammer and knocking it around.

Suddenly, the voice of an old cat came from the headphones.

"Tang Yue, come and do me a favor."

"What's wrong?"

Tang Yue turned his head and saw that the old cat was squatting on the edge of a battery board, with his back to him, motionless.

"Come here."

The old cat's voice was deep and serious.

Tang Yue got up and walked over, the old cat was squatting on the ground, his eyes were staring at the battery board, and his right paw was holding a brush, stiff as a statue.

"Old cat?" Tang Yue was stunned.

"Don't touch me."

Tang Yue's hand that was about to stretch out shrank and stopped in mid-air.

"Left arm." The old cat said, "Pinch my left arm, under the shoulder, with both hands." ”

"What's wrong with you? What's wrong? Can't move? Tang Yue squatted down beside it and grabbed the old cat's arm with both hands.

"Forcefully." The old cat whispered, "Now listen to my instructions, twist counterclockwise, turn slowly, don't go too fast, I tell you to stop, you stop." ”

"Is that so?" Tang Yue nodded, and began to twist the old cat's left arm slowly, he immediately realized that something was unusual, the old cat's arm was rusty to death, and it turned like rough metal rubbing against each other, and then he felt something suddenly break, the touch was like a steel wire being stretched to the limit, the old cat's body trembled violently, gritted his teeth and said, "Stop!"

Tang Yue stopped, not daring to move again.

"Let go of me."

Tang Yue looked at it in a daze.

"You can let me go." The old cat breathed a sigh of relief, "It's okay anymore, it's just an old problem." ”

"Old problems? When did you get such an old problem? Tang Yue let go of the old cat's arm, very surprised.

"Didn't I break this arm the last time I went out to look for the Chelome? The conditions in Kunlun Station are too poor to be completely repaired. The old cat grabbed his left shoulder, and pushed and pulled violently like an orthopedic doctor, clicking, "This arm does not obey from time to time, as if it has cramps, and even the rest of the hands and feet are starting to make problems, one is down, and the rest is down, and the rest are down, and it is really old." ”

"Is there a way to fix it?" Tang Yue asked, "You teach me, I'll help you repair it, I'm an expert in repairing electrical appliances." ”

"You are also an expert in repairing tractor electromechanical refrigerators, this is not within your professional scope, there are no key materials on Mars, and you can't repair it if you don't return to the factory." The old cat tried to round his forelimbs, "It's fine, don't worry...... You see, this arm is fine now. ”

Tang Yue was still worried.

"It's fine."

"I don't read much, don't fool me." Tang Yue said, "Is it really okay? ”

"No problem." The old cat tossed the brush into the air, and then grabbed it accurately with his left paw, "Look, is it as flexible as before?" ”

"I'll do all the rest of the work, you go back and rest." Tang Yue snatched the brush from the old cat's paw.

The old cat looked at him, his ears sticking up.

"Go back! Get back in the car! You're disabled, what are you doing here? You old crippled cat! ”

The old cat glanced left and right, showed the characteristic disgusted expression of the cat, purred sound, and got up and walked towards the Martian stray dog.

Tang Yue squatted on the side of the solar panel, and was about to clean the sand on the panel, when suddenly a strong force came from behind him, pulling him off and almost sitting on the ground. Tang Yue was startled, and hurriedly turned around, only to find that the charging cable plug connected to the Mingguang armor had been torn off, and the old cat tripped over the cable and fell to the ground, lying there motionless, and the left arm that had fallen off was thrown several steps in front of him.