So, should we eat it before hibernation, or should we enjoy the good time after hibernation?

How to achieve the highest satisfaction level while reducing the risks brought by problems such as deterioration is a very difficult mathematical problem.

Very bored, Zhang Yuan has been constructing a "satisfaction function" and a "swering risk function" in his mind, trying to get a higher degree of satisfaction at the cost of two kilograms of beef jerky.

Half a quarter of an hour later, a "boom" sounded softly, and the elevator they were carrying had reached the surface, and the external temperature displayed on the instrument was minus 170 degrees Celsius.

"Mr. Zhang, I can only send you here."

"Maybe I will never meet again in the future. Can I... hug me?" The girl in charge of receiving Zhang Yuan hesitated for a while and said quietly in his ear. No story has happened these days, and she still feels it's a pity.

Zhang Yuan was stunned for a moment, opened his hands and hugged the girl he had known for five days.

With the pain in his hands, he still gave her some of the beef jerky in his hand.

"Thank you for your care these days, I'll give you this little gift."

The girl jumped up happily: "Ah, you are such a good person! I haven't eaten the beef jerky from the earth for a long time... Alas, all the things here are very expensive..."

From her surprise gaze, we can know that this thing is definitely a well-known "luxury" in Europa.

No wonder the organizers treat them as small gifts.

Although Europa has begun to breed some livestock, its output must be low in order to maintain the health of the ecosystem.

"It's just a little jerky. It's nothing."

Zhang Yuan felt sad that they astronauts might have to face such a bleak tomorrow.

Perhaps...it's even more dismal.

"Bon Voyage!"

Nodding slightly, Zhang Yuan turned around and left on the train. From a distance, he could still see the girl waving her hands in the glass window.

The space elevator is hundreds of kilometers away.

"goodbye!"

Along the way, you can see various busy construction site scenes.

The fire of nuclear fusion has been ignited on this planet, and the next development is only a matter of time.

With the efforts of generations, this place will become another home for mankind.

Maybe...

Compared with the earth, Europa actually has many defects. The surface here is full of ice and water resources are not short of, but this planet is extremely lacking in metal elements, rare earths and organic matter.

Current mineral mining companies can only develop certain large meteorite mines that fall on the surface. However, the reserves of these meteorite mines are all quite limited, and they will be gone after mining.

Jupiter has another larger moon, Io, which makes mining even more difficult.

Io's body shape is similar to Europa. It is an earth-like planet, but the frequent occurrence of many super volcanic activities and super earthquakes makes it an extremely dangerous planet.

No one will invest in an unstable place. Maybe in a few years, a super earthquake will cause all investment to be wasted.

From this perspective, humans still have considerable room for improvement in their interstellar development level.

If you have enough ability to calm volcanoes and earthquakes, there are still many places where the solar system can live...

"Senior Brother Zhao, I noticed that due to improper maintenance, some people may have severe degeneration and their muscle lines are different from those of normal people." Zhang Yuan asked quietly when he was taking the space elevator to return to Earth Age.

"This dramatic physical change may cause some irreparable damage, and it will be difficult to recover even if you finally return to Earth, right?"

This question has been lingering in my heart, and I don’t have time to ask, and when I ask, I feel relieved.

Under low gravity conditions, the pressure on the intervertebral disc caused by weight disappears, the compression of the intervertebral disc can be released, and the person will become higher.

Normally, as long as the damage is not serious, the astronaut's height will return to normal after returning to Earth.

But low gravity environments can have a series of effects on gene expression. For some people with severe degeneration, they may no longer be able to adapt to the earth's environment.

"Did you find out too..." Zhao Qingfeng thought for a while and whispered: "Do you think they are from Xia?"

"It seems, it shouldn't be. I can't understand what they say."

"Can they be American or Lan Guo?"

Zhang Yuan shook his head, "It shouldn't be."

"Then who do you think they will be, where do you come from..."

Maybe...some small countries?

I pondered for a while and suddenly realized.

Behind all the glamorousness, there are countless unknown nights.

The salary of normal technicians here is too high, starting with a million-dollar annual salary. Moreover, most people only have three years of contract, and they will eventually return to Earth.

Three years is actually a little too fewer than the development cycle that takes decades. Frequent personnel flow will definitely be unfavorable to the entire development project.

In this case, there will inevitably be some more "money-saving" and "economic" ways for the entire civilization and some capitalists.

Even though the current automation industry is quite developed, human roles cannot be easily replaced in complex environments.

Zhang Yuan asked quietly again: "Are these people settled here?"

"Yeah, it's been around decades since the beginning."

"Why do anyone want to do this?"

Senior Brother Zhao smiled and sighed: "What you think is good or bad, is willing or not, is only relative. Why are some people willing to live in poor mountains and bad waters? Why are some people living on loess high slopes? Why are some people still living in rural areas rather than cities?"

"What's wrong with settled here compared to the hard days in the past? As long as you sell your labor force, you will at least not be worried about starving to death. You can still live a more exciting life, and you will have more promising places than on the earth..."

Zhang Yuan was silent and found himself asking a stupid question. He asked again: "So, can they breed offspring?"

Senior Brother Zhao looked around and said, "It is said that it is OK."

After pausing for a while, he added, "At the current medical level, it's okay. It's just that there's a little risk, and the chance of getting pregnant is not high."

The air was in a dead silence. Zhang Yuan originally wanted to ask, under such drastic environmental changes, will the evolution of generation after generation form reproductive isolation and different races?

But after thinking about it, he swallowed these words again.

Physiological screening will take at least tens of thousands of years, right? It is indeed a bit overestimated by his ability to consider this issue.
Chapter completed!