"drop!"

The beep sounded again.

The red light on the detector lights up again.

Xia Wanyi reached out with a numb look on her face to clean the ice and soil mixture spread out on the detector.

"Are you still not finding it?"

Seeing Xia Wanyi's stiff movements from the corner of her eyes, Bai Yixuan smiled bitterly and asked on the radio.

Xia Wanyi sighed slightly, and while reaching out to put the next batch of test samples into the detector, she shook her head and said, "Not yet."

"How many meters underground now?"

Bai Yixuan raised his eyelids slightly and glanced at the LCD monitor on the driller in front of him.

"From the surface, it's already 25 meters."

"25 meters?!" Xia Wanyi's tone was full of surprise, "Have you dug up the real ice layer even though you are so deep?!" ъìqυgΕtv.℃ǒΜ

Bai Yixuan smiled bitterly and shook his head, sighing deeply.

"I guess we'll have to go there this time."

"Who would have thought that the surface filling at the bottom of this deadly crater was nearly twenty meters thick!" Bai Yixuan's voice was full of resentment, "I guess Professor Lu should be confused when he knew this news?"

Xia Wanyi glanced speechlessly at the drilling steel pipe that was only five meters long left.

"So, we worked hard for a long time, which was equivalent to just drilling five meters underground?"

Bai Yixuan sneered.

"Ahem...so to say that."

Xia Wanyi: “…”

Suddenly, Hong Fan's exclamation came from the radio.

"Captain! Stop chatting!"

"It seems like the drilling machine has hit the ice!"

Looking at the drilling steel pipe with a significant decline in the descent speed, Hong Fan and Bai Yixuan's eyes showed a hint of surprise.

...

Twenty minutes later.

"drop!"

As usual, the red indicator light ruthlessly illuminated Xia Wanyi's numb face through the glass mask.

She mechanically cleaned the soil chips mixed with more ice in front of her to the side.

Seeing Xia Wanyi's actions, Bai Yixuan sighed deeply.

"Captain, what should we do now?"

Hong Fan straightened up, gently rubbed his sore waist with his hands, and asked in a low voice: "Do you want to report to Professor Lu?"

Bai Yixuan pondered for a moment and shook his head.

"It's not that far."

"We've just drilled a hole at the moment, let's continue!"

"After all, Professor Lu said when he set out, this may be an extremely difficult and long job."

...

Outside the Mars cabin.

Two "little moons" hung high above Mars at night.

That was Phobos and Phobos.

Compared with the moon, although Phobos and Phobos are relatively close to Mars, only 9,000 kilometers and 23,000 kilometers respectively, the two are smaller in size, only one percent of the moon.

Therefore, both often cannot reflect the sun's light onto the surface of Mars.

Even in some high-latitude areas, these two small satellites are not visible at all.

As soon as he walked out of the Mars pole, Andrew subconsciously looked up at the sky.

When he saw the two particularly bright large stars in the night sky, he couldn't help but be stunned.

"Look, we're lucky."

"I actually saw Phobos and Phobos at one time!"

Andrew's eyes flashed with excitement, but soon, the excitement turned into regret.

Unfortunately, the sunlight reflected by Phobos and Phobos, as well as the starlight brought by the stars in infinite distances, cannot illuminate the solemn night of Mars.

"Okay, okay, let me say something about emotion later. Don't forget that our oxygen is only enough to support three hours of extra-cabin activities."

Bruno struggled to drag the CO2 absorption equipment and toolbox from the round gate.

"I said Andrew, can you turn on the searchlight quickly...I can't even see the road!"

Andrew's thoughts were interrupted by Bruno's complaints.

He turned his head helplessly to look at Bruno behind him, and raised his hand to turn on the high-intensity searchlight.

The searchlight is very bright, but it only illuminates the little space in front of the two of them.

In the endless darkness, this incandescent looks a little dim and powerless.

After setting up the searchlight, Andrew reached out and grabbed the toolbox beside him, walked to the area where the air circulation equipment was loaded, and skillfully removed the metal protective shell on the surface of the Mars cabin.

"Joey, has the air circulation equipment been suspended?"

To be on the safe side, Andrew asked via radio to Joy in the first cabin.

Soon, Joey's response came into his ears: "It's stopped!"

Andrew closed his eyes slightly, and the scenes of the training quickly flashed through his mind.

After recalling the operation process, he picked up tools one by one and slowly disassembled the air circulation equipment.

When he saw the carbon dioxide absorber, he couldn't help but be stunned.

The surface of the carbon dioxide absorber is covered with red Martian dust.

"The cause of the failure has been found."

Andrew whispered: "It is probably because the sealing work of Nasa is not done well, and the carbon dioxide absorber is full of Martian dust."

"Tsk!" Bruno's smacking voice came from the radio, "I just said that Nasa is unreliable!"

“What should I do now?”

"We don't even know where the sealing is wrong!"

Andrew's eyes were full of helplessness, and he sighed deeply.

"What else can I do? Install the replaced equipment first today and wait for the response from Houston."

As he said that, Andrew installed a spare carbon dioxide absorber.

After restoring all the equipment, Andrew said again: "Joey, start the air circulation equipment and see if it works properly."

A few minutes later.

No response.

"Joey?"

Andrew twitched slightly at the corner of his eyes and said again: "Joy, are you here?"

The next moment, a panic sound rang out in the headphones inside the helmet!

"Damnit... Andrew, the air circulation still doesn't work properly!!"

"It's still the original problem! The carbon dioxide absorption device is wrong!"

Andrew's heart sank.

Could it be that Martian dust has invaded the equipment?

He took a deep breath and said in a gentle tone: "Joey, don't panic."

"Maybe this replacement device is broken, so I'll try another one."

...

With the experience just now, Andrew's replacement was obviously much faster this time.

Half an hour later.

"Joey, start the air circulation device again!"

A few seconds later, Joey came with a crying voice.

"Andrew, it's still not possible!"

“Carbon dioxide absorber failure!”

Hearing Joey's words with crying sounds, Andrew's heart was like a stone, sinking lower and lower in the water.

Andrew's hands trembled slightly and took off the air circulation device again.

This time, he raised the flashlight and carefully checked the fault.

When a hidden gap and a red rock the size of a fist appeared in front of him, Andrew instantly held his breath.

It's over.

These two words flashed through his mind.

"Two, something might have happened to us."
Chapter completed!