The first day (4) of oxygen is sufficient for fifteen years

The old cat was taken aback

If someone were to draw a map of the solar system, then on that map, Tang Yue and Mai Dong would be in such close proximity that not even a single pixel could fit between them

There are no landers on the space station of Mai Dong, and the next lander was originally supposed to be brought by the Orion spacecraft two years later. However, now that Earth has disappeared, the next expedition team to Mars can no longer set out.

Both Tang Yue and Lao Mao are well aware of this matter

These boxes now constitute all of Tang Yue's possessions, directly determining how long he can survive

Rest assured, I will definitely take it with me before I die

The girl's expression gradually dimmed

The only lander currently stands on the sandy ground outside Kunlun Station, and this lander is referred to by Tang Yue as the "Eagle" spacecraft

A person produces 0.8 kilograms of oxygen daily, which is sufficient, " said the old cat

"Not necessarily, you might not live as long as it does," said the old cat. "The design lifespan of the OGS is fifteen years, and this system was only replaced last year, so it still has at least ten years of life left... but you might not live for another ten years."

This was also the training that Tang Yue initially received: when trapped in a desperate situation and losing contact, persist in survival and hold on for rescue

First, check the oxygen and fresh water. The old cat instructed, then take stock of food, medicine, electricity, fuel, energy, and redundant spare parts

How much longer can this thing work?" Tang Yue asked, "Is my lifespan the same as its? If it breaks down, am I doomed as well?

The old cat nodded quickly, "Yes, yes, yes, I will definitely think of a solution!"

The launcher is responsible for sending Tang Yue to the International Space Station; this is its sole function and mission. Once the task is completed, it will be discarded, as it lacks the capability to re-enter the atmosphere. In other words, Tang Yue has the ability to enter the International Space Station again, but once he goes up, he will never be able to come down.

On the cosmic scale, often measured in light-years and astronomical units, the insignificant distance of 400 kilometers pales in comparison to the 55 million kilometers between Earth and Mars, rendering it negligible, much like the thin layer of glass on a computer screen, as if Tang Yue could break through this layer of glass to reach the other side

This item is formally named the "oxygen generation system," abbreviated as "OGS"

There are two life support systems at Kunlun Station. One is the commonly used regenerative oxygen generation system, which produces oxygen through the electrolysis of water. As long as there is electricity and a water source, the system can continuously generate oxygen. Under normal circumstances, the oxygen in Kunlun Station is provided by this system.

If all goes as planned, Tang Yue will leave Kunlun Station aboard this lander after completing all his work, head to the International Space Station, and then take the Orion II spacecraft back to Earth

Yes, yes, yes, Miss Mai Dong, we will definitely find a way to bring you down! Tang Yue nodded, "You must believe us! I have Old Cat here, Old Cat is an expert! It will have a solution! Right, Old Cat?"

First is oxygen

A slight difference can create a vast chasm

Tang Yue kicked the old cat in a place where Mai Dong could not see

Tang Zong had no choice but to unpack his supplies once again, reopening all the boxes that had been packed. Regardless of whether the Earth was permanently missing or temporarily lost, he had to first survive on this desolate planet.

You all need to take stock of all essential survival supplies now, including oxygen, electricity, food, fresh water, medicine, and spare parts," urged the old cat. "Remember to be thorough and ensure that nothing is overlooked

"Young lady, do not be disheartened just yet; let us think of another way," the old cat comforted her. "There is a saying, 'As long as the green mountains remain, one need not fear the lack of firewood. As long as people are safe and sound, a solution will surely be found... There is always a way out in times of difficulty."

Tang Yue glanced at the old cat

There is indeed an Orion II spacecraft on the space station, but the Orion is merely a space shuttle, responsible for shuttling back and forth between Earth and Mars. It will disintegrate immediately upon entering the atmosphere, turning into ashes.

Mai Dong bit her lip and nodded slightly

When he was tidying up Kunlun Station, he had already organized this place once, so something happened. Everything was packed and placed in an orderly manner, categorized accordingly.

However, for a person who is 1.7 meters tall, 400 kilometers is still too far, far enough that they may never meet in a lifetime

If all goes well, under sufficient power supply, there should be no problem with a natural end of life... about fifteen years

Tang Yue opened the cover of the OGS cabinet, and the green indicator light showed that the working status was normal. A faint buzzing sound emanated from inside the cabinet, which was the sound of electrolysis.

The girl floated in the space station, her expression forlorn, which meant that from now on she would have to remain alone in this space station, isolated in the vast universe. This endless torment was more unbearable than death itself.

It appears to be a refrigerator or air conditioner, a white cabinet standing in the corner, with a high degree of integration. Back in the day, the OGS system on the American space shuttle was a massive entity weighing several hundred kilograms

How long can this device be used at the lowest power operation state

The old cat calculated.

When the Earth was still around, Tang Yue, with the thought of using what he could for free, treated the OGS as an air conditioner. Now, he truly wishes he could strangle his former self at that time

Mr. Tang Yue! Mr. Tang Yue!" Mai Dong called out anxiously in the channel, "Can I... can I land down there? Can I come over to your side?"

... ...

I understand

Tang Yue held the operation and maintenance manual in his hand, his gaze sweeping over the buttons and indicator lights on the control panel. The OGS cabinet could produce up to 5 kilograms of oxygen per day, providing sufficient oxygen for six individuals. Now, only Tang Yue remained at Kunlun Station, and he lowered the power of the cabinet

However, this device is disposable. It is divided into two parts: the ascent stage and the descent stage. Only the ascent stage, which is the upper part of the lander, will truly detach from Mars, while the lower part will remain on the surface of Mars

The old cat gradually fell silent

Fate has played a cruel joke, as they are clearly the last two people in the world, having narrowly escaped a catastrophic disaster, yet they are unable to bridge the mere four hundred kilometers that separate them

However, perchlorate is a consumable; using a little means that there is less left, and it cannot be replenished. Therefore, it will not be activated in non-emergency situations and is usually stored in the first aid kit

Tang Yue is genuinely worried that this girl might do something foolish in a moment of despair. He himself is carefree and untroubled, but the young lady may not possess such a thick skin. After all, the disappearance of the Earth is such a significant blow that most people would likely suffer a mental breakdown.

At that time, he did not consider that he would have to rely on these items for survival while packing the boxes; he only felt that he was cleaning up the mess for the expedition team, with his mind solely focused on returning to Earth as soon as possible

Oxygen is the most critical; a lack of it for three minutes can be fatal to Tang Yue

He also wishes to live a little longer, so he tries to reduce the power output in order to extend the lifespan of the OGS

The "Eagle" spacecraft is the only vehicle in Tang Yue's possession capable of escaping Mars' gravity, entering orbit, and docking with the International Space Station

Mai Dong is unable to land

Survive alone

She can only stay on the space station

Another system is a non-regenerative oxygen generation system used in emergency situations, which utilizes solid perchlorates for oxygen production

Tang Yue began to inventory the supplies

Tang Yue significantly reduced the power by more than half

Although it may not seem very conspicuous, the OGS cabinet is the core of life support at Kunlun Station and is also the most complex part; if it malfunctions, Tang Yue will not survive for more than five minutes

The old cat shook its head