So, should you eat it up before hibernation, or should you wake up from hibernation and have a good time?

How to achieve the highest level of satisfaction while reducing the risk of problems such as spoilage is a difficult mathematical problem.

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

Half an hour later, there was a soft "boom", and the elevator they were carrying had reached the surface, and the outside temperature displayed on the instrument was minus 170 degrees Celsius.

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

"Maybe we'll never see each other again, can you...... A hug? The little girl in charge of receiving Zhang Yuan hesitated for a moment and whispered in his ear. There hasn't been a story in the past few days, and she still feels weird.

Zhang Yuan was stunned, opened his hands, and hugged the girl who had just known him for five days.

Endured the pain in his flesh, he still gave her some beef jerky in his hand.

"Thank you for taking care of me these days, and I'll give you this little gift."

The girl jumped for joy: "Ah, what a good man you are! It's been a long time since I've eaten beef jerky from Earth...... Alas, everything here is very expensive......"

From her surprised gaze, it can be known that this thing is definitely a well-known "luxury" on Europa.

It's no wonder that the organizers treat them as small gifts.

Europa has started to raise some livestock, but in order to keep the biosphere healthy, the production is necessarily low.

"Just a bit of beef jerky. Nothing. ”

Zhang Yuan's heart was gloomy, they, the astronauts, might also have to face such a bleak tomorrow.

Maybe...... Even more bleak.

"Have a nice trip!"

Nodding slightly, Zhang Yuan turned around and left on the train, and in the 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 all kinds of busy construction site scenes.

The flame of nuclear fusion has already ignited on this planet, and it is only a matter of time before it is developed.

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

Perhaps......

Europa also has a lot of flaws compared to Earth. The surface is all ice and there is no shortage of water, but the planet is anomalously lacking in metals, rare earths, and organic matter.

At present, mineral extraction 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 are gone when they are mined.

Jupiter has another relatively large moon, Europa, which is even more difficult to mine.

Io's size is similar to Europa's size and is a terrestrial planet, but the frequent occurrence of supervolcanic activity and super earthquakes makes it an extremely dangerous planet.

No one is going to invest in an unstable place, maybe a few years of hard work, a super earthquake, the whole investment is lost.

From this point of view, there is still considerable room for improvement in the level of interstellar development of human beings.

If there is enough capacity to quell volcanoes and earthquakes, there are still many places in the solar system that can be inhabited......

"Senior Brother Zhao, I noticed that some people's bodies may be seriously degraded due to improper maintenance, and their muscle lines are not the same as normal people." When returning to Earth Age in the space elevator, Zhang Yuan asked quietly.

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

This question has been haunting me all the time, and I don't have time to ask it, so I seem to be relieved to ask it at this time.

In low gravity conditions, the pressure on the intervertebral disc due to body weight disappears, the compression of the intervertebral disc is released, and the person becomes taller.

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

However, low gravity can have a range of effects on gene expression. For some people who are severely degraded, they may no longer be able to adapt to the earth's environment.

"Have you noticed it too...... Zhao Qingfeng thought for a while and said in a low voice: "Do you think they will be from the Xia Kingdom?" ”

"Probably not, it seems. I don't understand what they're saying. ”

"Will it be a Mi country, or a Lan countryman?"

Zhang Yuan shook his head, "Probably not." ”

"So who do you think they will be and where will they come from......"

Probably...... Some small country?

I pondered in my heart for a while, and suddenly realized.

Behind all the glamorous and glamorous, there are countless unknown dark nights.

The salary of normal technicians here is too high, starting from a million annual salaries. And most people only have three years on contract and will eventually return to Earth.

Three years is actually too little compared to the development cycle of several decades, and the frequent turnover of personnel is definitely not good for the entire development project.

That being the case, there must be some more "economical" and "economical" ways for civilization as a whole, and for certain capitalists.

Even though the current automation industry has been quite developed, in a complex environment, the role of people still cannot be easily replaced.

Zhang Yuan quietly asked again: "These people have already settled here?" ”

"yes, from the beginning, decades ago."

"Why would anyone want to do that?"

Senior Brother Zhao smiled and sighed: "What you think is good or not, whether you are willing or not, is only relative. Why would anyone want to live in a place where the mountains and rivers are poor? Why do people live on the Loess Plateau? Why do some people still live in the countryside instead of the city? ”

"Compared to the hard days of the past, what's so bad about settling here? As long as you sell your labor power, at least you won't have the trouble of starving to death, and you can still live a good life, and there are more prospects than on earth......"

Zhang Yuan was silent, and realized that he had asked a stupid question. He asked, "So, will they be able to reproduce?" ”

Senior Brother Zhao looked around for a moment, and then said, "It is said that you can." ”

After a pause, he added, "With the current level of medical care, it's still okay." It's just a little risky, and the chances of getting pregnant are not high. ”

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

But after thinking about it, he swallowed it back.

Physiological screening will take at least tens of thousands of years, right? It's a bit overwhelming to let him think about it.