I don't know how long it took, Tang Yue's eyes were sore and painful, tears couldn't stop flowing, staring at the images on the computer for a long time was really a time-consuming and energy-consuming thing, and Tang Yue saw it as a cross-eyed for a long time.

There are so many photos that need to be identified that they seem to be endless, and each one is highly similar, the previous one and the next one seem to be only numbered, and when the image is enlarged, the eyes are full of gray-black pixels, staring at this kind of thing can easily cause eye and brain fatigue, in order to prevent dazzling and missing clues, Tang Yue has to often close his eyes and rest.

Mai Dong's camera field of view is a rectangle with an area of 2,000 square meters, with a length and width of 40 to 50 meters, while the length of the Martian stray dog is more than five meters, and the shadow cast by the sun on the ground can appear larger, if the space station really photographed the Martian stray dog, then Tang Yue and Mai Dong should be able to quickly distinguish it, like a striking reef on the sea.

Tang Yue also tried to find more traces, such as the ruts of the Martian stray dogs, and the traces of the solar panels unfolding, but he later gave up his efforts, the resolution of the image was too low, and the Martian stray dogs, the size of a truck, could barely be distinguished, but the ruts on the sand were completely hidden in the mosaic, and all the details were blurred into square pixels, and Tang Yue couldn't see it with two eyes.

Dune.

Dune.

Rock.

Shade.

Dune.

Mountain range.

Rock.

It's rocks again.

Or rocks.

Tang Yue closed his eyes, his body left the table, all the computer screens were images of the surface of Mars, and the number of the photos had reached three hundred and twenty, that is to say, he had finished reading more than three hundred photos and searched an area of six hundred and forty thousand square meters, but so far he had not found any valuable clues, and there was not the slightest trace of the old cat's activities.

As a robot, the old cat doesn't need anything but electricity, in a sense, this increases the difficulty of Tang Yue's search for it, if the old cat is replaced by a normal person, then he is bound to carry a huge amount of food and clothing like a nomad, human life will leave a lot of traces, produce a lot of garbage, these abnormal traces are obviously different from the natural environment, it is easy to see.

But as long as the old cat has the battery board and the rover, put the battery board away when moving, step on the accelerator and go, disappear into the vast desert, and the wind and sand will bury and eliminate the ruts of the Martian stray dogs, leaving no trace.

Tang Yue rested for half a minute according to his eyes, opened his eyes and glanced at the time, and before he knew it, he had been searching for more than three hours.

Within three hours, the Joint Space Station flew over the Kunlun station again, and Mai Dong took another thousand photos, which were transmitted to the Kunlun station's computer for storage, waiting for interpretation.

"Tang Yue, have you seen the position I just circled? What do you think that's ...... I think it's kind of like a trace of activity from the rover, the direction is exactly the same. Mai Dong was munching on a biscuit and turned his head towards the camera. Mai Dong is also as tired as Tang Yue, her workload is greater than Tang Yue, and she has not eaten until now, so she can only nibble on a biscuit at will to solve the problem.

Tang Yue shook his head, "It's just the shadow of the riverbed, not the rut of the Martian stray dog." ”

"And what about the number two mark? Is that circle so regular, also natural? Could it be a sign of Mr. Cat's activity? ”

"It has nothing to do with the old cat, it should just be a pit."

Searching the surface of Mars so carefully, occasionally Tang Yue and Mai Dong can also find some strange things, not like natural formations or artificial creations, for example, you can see a half-buried huge statue in a certain photo, with a shoehorn face - Mai Dong can't explain their origin anyway, Tang Yue said that it may be just ordinary rocks, because the resolution of the photos is extremely low, the rocks are associated with other things under the combined effect of light and shadow.

In the 70s of the last century, the Viking probe found a clear human face on the surface of Mars, but it turned out that this face has nothing to do with the intelligent creatures of Mars, it is just a magic of light and shadow, and then other probes re-photographed the original place, and it is really just a rock without anomalies.

Mai Dong rubbed her eyes, her eyes were a little dry and astringent, and she could see a beating phantom when she closed her eyes.

She had to rest, and if she looked at it like this, she would have to see the ghosting.

The joint space station has already reached the far side of Mars, and there is still more than an hour before it will pass over the Kunlun station again, and in this interval of more than an hour, Mai Dong seized the time to interpret the image and bear part of the workload for Tang Yue. The girl has completed the identification of more than 200 photos, Mai Dong is a very careful girl, she has repeated more than 200 boring interpretation work, meticulous, each picture she must confirm that there is no doubt 100%.

In two rounds of scanning, Mai Dong has photographed an area of nearly six million square meters, that is, six square kilometers, and the total area she needs to search is as high as 190 square kilometers, which is less than one-thirtieth of the total.

The amount of image data left is daunting when you think about it.

Mai Dong scooped up the Shiba Inu doll floating in the air, held it in his hand and squeezed it hard, and then placed it on top of his head.

"Little Q, little Q, where did you say Mr. Cat went?"

The name of this Shiba Inu is Ah Q, and it is obvious that Mai Dong is a name waste, and the name she took is simply a collection of Lu Xun's works, and the tomatoes in the incubator can be called Runtu and Ru.

The little stuffed animal has a pair of big dark eyes and an innocent face.

Mai Dong looked at it directly, with dark eyes and innocent faces.

"And 100,000 photos...... 100,000 sheets, 100,000 sheets! 100,000 sheets, 100,000 sheets! ”

The girl pinched the plush toys around, and every time she pinched it, it was a sentence of 100,000 sheets, and the dog's face was pinched and deformed.

"My God, who will help me...... A hundred thousand, I think I'm going to die here......" The girl slowly covered her face and sighed.

"Mai Dong?"

"In!" The girl opened her eyes and pushed the bulkhead carp to stiffen, "What did Aiqing call me?" ”

"Look at this." Tang Yue sent the photo over, "Two rows of very uniform dark traces, almost completely parallel, like ruts?" ”

Mai Dong stared at the screen for a long time, "No...... No, it's not a rut, Tang Yue, you compare it with the surrounding environment, look at the ruler, if this is a rut, then this rut has to be more than three meters wide, and the wheels of the Martian stray dog are far from so wide......"

Tang Yue didn't make a sound, presumably he was also carefully observing the image.

"I think this should be the shadows on both sides of a rectangular sand dune, Tang Yue, turn the photo a little." Mai Dong reminded, "These two shadows are not concave, but convex. ”

"I see, next one."

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(Author's gossip:

I highly recommend the movie "The Wandering Earth", the first domestic sci-fi masterpiece.

When the author Jun read Da Liu's original work of "The Wandering Earth", he thought that this novel is not suitable for adaptation into a movie among Da Liu's many works, because its core is grand feelings and spirit, rather than storytelling, and most of the adaptations of a novel with a weak story into a movie are not pleasing to the movie.

I didn't expect someone to gnaw on this hard bone, and the author is happy for domestic science fiction from the bottom of his heart. ）