"The landing site of the Chelome probe is ninety-five kilometers southwest of Kunlun Station, the specific latitude and longitude I have sent to you, the probe consists of two parts, a lander and a rover, I have made contact with the lander, but the rover is currently in a state of disconnection...... The Cherome is currently semi-dormant, its battery is low, and it sends me a signal every five minutes. ”

"OK, thank you for your help, Miss Mai Dong." The old cat opened the garage door, "Please keep track and follow the Cheromeh." ”

Tang Yue and the old cat stood in the garage, and in front of them was the tall front of the Martian stray dog, and the polygonal cab protruded forward, inlaid with dark glass.

The distance between the Cherome rover and the Kunlun station is almost 100 kilometers, and there is no doubt that it is impossible to travel such a distance on foot, so they can only drive the rover to find the probe.

"On average, a Martian stray dog can run up to 30 kilometers a day, charging during the day and rushing at night, so 95 kilometers should run for three to four days, and it takes six to eight days to go back and forth." Tang Yue leaned against the wall of the garage, looked up and down the body of the rover, and calculated the time, "In six to eight days, the life support system of Mingguang Armor alone will definitely not be able to bear it, so we have to bring up the OGS system, so we will have to transform the rover......"

Tang Yue planned in his heart, it is still quite complicated to move the OGS cabinet to the car, it is not an air conditioner after all, it is not as simple as just moving a place...... The experimental cabin of the Martian stray dog itself is airtight, which saves a lot of trouble, otherwise how to close the cabin is a big problem, and he can't always wrap the whole car tightly with duct tape.

"For six to eight days, we have to carry food and fresh water for at least ten days, and this weight also has to be considered, and the space in the experimental cabin is limited, so we definitely can't fit it, so we have to pack them and put them on the roof of the car."

"There was also the issue of the power supply, we had to bring solar panels, and we had to carry enough of them to meet the needs of the stray dogs." Tang Yue leaned against the car door and turned his head to look at the battery farm in the distance, the neat battery panels reflecting the sunlight.

Usually the Martian stray dog is parked in the garage, the battery farm will provide it with energy, and the battery is usually in a fully charged state, but if you want to drive the electric car a hundred kilometers away, you need to bring the battery panels - on Mars, solar panels are not an efficient power source, and the work used to support scientific research instruments is still within its capabilities, but it is difficult to drive a car, so the charging process is as slow as a turtle.

There are two battery panels on the roof of the Martian Stray Dog, but those batteries are not used to power the engine, but to power the experiment module.

"The maximum power of the Martian stray dog is 30 kilowatts, if you remove all the power-consuming instruments in the experimental cabin and install the OGS cabinet, the heat source can use RTG, this thing does not consume electricity, then the power of a solar panel is 200 watts, and we have to carry a total of ......" Tang Yue began to calculate how many batteries he needed to bring.

"No, I don't." The old cat shook his head and interrupted Tang Yue.

Tang Yue was stunned.

"We don't need an OGS system, we don't need RTGs, and we don't need to modify Martian stray dogs." The old cat knocked on the wheels of the rover, and these huge wheels were not inflated inside, but were finely woven metal mesh.

"Without OGS?" Tang Yue turned his head, "What about oxygen?" ”

The old cat stared at him with burning eyes, and said word by word, "No need for oxygen."

Tang Yue was shocked, he suddenly realized what the old cat meant...... Yes, they don't need to modify the Martian stray dogs, they don't need to install OGS cabinets, they don't need to carry RTGs and supplies, and all life support systems don't need to, because Tang Yue doesn't need to participate in this operation at all.

The old cat never thought of letting Tang Yue go with him from the beginning, it was good for a cat to go, it didn't need oxygen, it didn't need heat, it didn't need a life support system, it just needed a car and a bunch of batteries.

This is the easiest way, the workload of modifying the Martian stray dog is too large, it is too troublesome to move the OGS cabinet, the food and fresh water are too heavy and take up too much space, and this goes hundreds of kilometers, there is no store in front of the village, in case of an accident on the road, the consequences are unimaginable.

"You're going alone?"

The old cat nodded, "I'll go alone, only drive the Martian stray dogs, remove all unnecessary things, take away half of the battery, and don't need anything else, so it's the fastest and easiest, and the safest and safest, you stay in Kunlun Station, and I'll try to rush back within seven days." ”

"Mr. Cat going by himself?" Mai Dong asked, "There won't be any problems, right?" ”

"If even I have problems, then Tang Yue will be even more dead end if he follows me." The old cat shook his head.

"But one more person should take care of it." Mai Dong said.

The old cat glanced at Tang Yue, "Who kind of person is he?" It's just a burden. ”

The old cat and Tang Yue began to move, untied the hinges, unloaded the geological experiment cabin, and replaced the board car, which is a bed board and two wheels, no power and no suspension, this is the simplest and lightest state of the Martian stray dog - tractor form.

All the old cat had to do was tow the Chelome back, so all it needed was a tractor.

Stray dogs in the form of a tractor can soar to the top speed, surpassing the Flying Pigeon brand bicycle.

During this time, Tang Yue returned to Kunlun Station to eat something, the old cat drove the stray dog out of the garage, and then the two began to clean up the solar panels.

"On average, the effective charging time of an average Martian day is eight to nine hours, no more than ten hours...... "The old cat folded up the solar panels and put them on Tang Yue's small cart, "I can only use the daytime to charge, from 6 am to 6 pm, and then travel again at night." ”

"How many panels do you need to bring?" Tang Yue asked.

"First ensure the normal operation of Kunlun Station, and I will take the rest with me." The old cat put the battery board on the cart and folded it, "How much electricity do you need in Kunlun Station?" ”

"I can turn off most of the functions in the Kunlun station, only keep the life support system and communication system, and the temperature can still be withstood by the RTG in a short time." Tang Yue calculated in his heart, "Thirty panels are enough." ”

"Okay, I'll take the remaining ten solar panels with me." The old cat nodded, "Ten battery panels, one is 200 watts, ten hours is 20 kilowatt hours, and you should be able to run 30 kilometers in a day, so it will take three days to reach the landing site of the Chelome from Kunlun Station...... If all goes well. ”

Tang Yue and the old cat stacked ten battery boards on the pallet cart and tied them firmly with cables.

"It's not going to fall off in a bump, is it?"

Tang Yue pushed the stacked panels hard, looking like they were tied tightly.

"No, it won't."

The old cat found a large piece of plastic sheeting and covered it on the battery board to prevent wind and sand, and it carefully tucked all the corners and corners, after all, the battery board is the lifeblood of Kunlun Station.

By the time everything was put in order, the sun was already setting in the west.

Tang Yue walked around the Martian stray dog a few times, thinking while checking, he was like a traveler before leaving the house, although he had already packed his luggage, he still couldn't stop checking repeatedly, for fear that something would be left behind.

"Will you be able to get back in seven days?"

"I try." The old cat patted Tang Yue's shoulder and asked him to squat down, "Don't be a demon when you stay in Kunlun Station, don't eat indiscriminately, don't drink water indiscriminately, don't toss electrical appliances indiscriminately, don't dismantle OGS and RTG, don't cultivate to a positive result, and you must pay attention to safety." ”

Tang Yue nodded.

"Wait until I get back." The old cat touched Tang Yue's mask with his forehead, "Good luck."

The old cat turned around and climbed into the cab of the Martian stray dog, started the car, and the stray dog vibrated and started slowly, twisting the front of the car, dragging the cart and the battery board to the boundless desert.

Tang Yue stood in front of the garage door and watched the old cat go away, the tractor bouncing and bumping on the Gobi Desert until its back became smaller and smaller, and finally disappeared into a red sunset.