A team of lunar rovers sped through a gray world, the pristine lunar surface being crushed by the wheels, leaving ruts in its wake.

If there had been no later destruction or other vehicles passing by, these rut marks would have survived forever, and the soil of the moon is a faithful and reliable historical record.

Unlike Earth, which has an atmosphere, water, and plants, the soil on the Moon, also known as lunar soil, or regolith, has a very homogeneous physical properties, which are almost entirely shaped by impacts.

Large chunks of bedrock are constantly broken, mixed, and churned by small celestial bodies, eventually forming this delicate layer of sand on the surface of the moon.

Although solar wind and cosmic rays can also change some properties of lunar soil, this effect is more chemical, such as the formation of hydroxyl groups and water in lunar soil particles, and basically does not affect the physical shape.

So these rut marks will always remember this historic lunar rescue.

Of course, as long as it is not affected by asteroid impacts, creating new large impact craters.

The convoy has a total of three powered lunar rovers, the three vehicles are strung together with cables, the driver of the first car is Peng Zizhen, the driver of the second car is Lin Yang, and the last car is on the following mode.

Although they drove relatively fast, they basically walked in a straight line and made big turns, and there were no quick small turns, so it was not a big problem to follow, and even two unpowered truck racks were dragged behind the third car, loaded with some supplies.

The three cars are strung together to prevent the head car from accidentally falling into the crack, after all, there are two cars behind it, as well as the truck rack, if the head car has an accident, it can also be easily pulled up.

Coupled with the guidance of the exploration satellites in orbit and the careful observation of the "head car navigator", they can reach the meeting place at a relatively fast speed.

"Inhale~exhale~inhale~exhale~"

The oxygen is decreasing, and so is the distance they walk.

"Zizhen, according to the plan, we have walked almost a fifth of the way now, so let's change me to lead the way."

Lin Yang in the second car said to Peng Zizhen in the front car.

"Okay, Sister Lin, this is a straight section, we will start to slow down after 30 seconds, and the speed will drop to zero within 20 seconds." Peng Zizhen said.

"Yes."

Because the three cars were strung together, the parking had to be linked, and soon they stopped as planned.

After the vehicle stopped, they did not rush to get on the car and hurry, but first circled the lunar rover and did a simple vehicle inspection.

Better tools make good work.

Is this the moon after all? And the places they pass through are very primitive places? It's not a highway on Earth, what if there is a crack somewhere, and the self-detection system can't detect it? I don't know when I'm going to give you a hard shot.

Not only can't people be saved? Even I have to get in.

No problem with the check? Lin Yangcai stood in the driver's seat of the first car, and Peng Zizhen got into the second car? The two started together with the intelligent unmanned vehicle behind them and continued to drive to the meeting point.

In fact, they are not slow to drive? It is not a speed limit of more than ten kilometers per hour, and they can drive to more than 20 kilometers per hour in places with flat terrain and wide vision.

The ground is undulating, and when next to the crater, they drive up to 10 km/h, or even slower.

The terrain next to the crater is more complex, the inside of the crater is the area where the impact lava cools, and the outside is the bulge and crack caused by the impact extrusion? Be very careful when exercising in such places.

The bulge is easy to say, and the big bulge is bypassed? A small bulge drove straight over? Those hidden cracks are the most dangerous of all.

Didn't drive out for 20 minutes? They stopped suddenly? Because the rover's probe found a suspected crack in something across the way.

Although it is "suspicious", the convoy cannot be reckless, so it can only stop and check.

During this time, Lin Yang was the navigator, so she went down to check.

Isn't the inspection seen with the naked eye? Instead, you need to use a vibration detector.

When the device is plugged into the ground, it radiates shock waves outward at a frequency of several times per second, and then collects the reflected fluctuations, and finally generates a geological model based on these multi-layered fluctuations.

After inspection, there was a big crack there, and there was only a little fragile structure on it, and if the car drove up, it would be a fool's errand.

Although the crack is not wide enough for the entire vehicle to fall, as long as the lunar rover is half planted in it, it will definitely be scrapped, and even the astronauts will be implicated in injuries.

The convoy stops early, turns well, and does not need to make a sharp turn or backwards.

Wait until you get around here and get back on your route.

All this was watched by the viewers who watched the live broadcast.

It is not easy for the Merrican astronauts waiting for rescue, and it is also not easy for the Tianxia astronauts who rushed to the rescue.

"This is too dangerous, if it weren't for today, who would have thought that humans could cross more than 400 kilometers on the moon to carry out rescue!"

"Yes, but it's precisely because it's so dangerous that you can see who you can count on at a critical moment."

"Not only is it dangerous, but it is also torturous, at present, the longest single spacewalk of human beings is nearly 9 hours, and this time both sides have to carry out more than a day of 'spacewalk', which is too much load on the spirit and body."

"Yes, more than a day of spacewalking, eating, drinking, and Lazar are all in the spacesuit, not to mention the body, the astronaut's mental pressure must be great."

"Hey, I shudder when I think about it, astronauts are really not ordinary people, anyway, I can't stand that feeling."

"One thing to say, indeed, in such a dangerous situation and mental pressure, the astronauts of Tianxia are really good, which shows that Tianxia is also a reassuring country."

"It's the same with the Navigators, whose equipment also plays a key role, and without their equipment, the two Merrican astronauts would be dead."

"Well, if the Navigator's Luna spacecraft is still on the moon, it can take off directly to save those two astronauts."

"However, the human technology tree is still a little lower, and the navigator is already so powerful, it will take several days for the spacecraft to refuel."

"I think human beings still have to develop together, they have to hold each other hostage, once we get out of the earth, we humans are too weak, and there will be an accident on the moon, and it will definitely be more difficult if it is far away."

"I hope that the astronauts can be rescued safely, and I also hope that after this incident, the two countries can cooperate and jointly lead mankind to the stars."

People were expecting the rescue to go smoothly, but bad news suddenly came from Merriken.

The lunar rover fell into a crack, and the wheels were directly broken, making it impossible to move forward.

All of a sudden, the hopes of the "whole village" were pinned on the rescue team.