Popular science says oxygen is poisonous, and the whole internet scolds me for being sick

When it comes to digging technology, humans have made no progress at all.

It's pretty much the same as last century.

Because humans don't have this need.

The biggest demand is for deep-seated oil.

These oil wells are built due to commercial needs.

That's why we were able to break through the depth of the Kola superdeep borehole.

In everyone's impression, going underground seems to be easier than going to the sky.

But Ye Zhen has now reversed this stereotype.

"As we all know, our current technology has long been able to build a space station in space.

And if necessary, it is actually possible to build a base on the moon.

After all, we all have these technologies.

But like I told you before.

Space is actually just a vacuum environment that needs to be dealt with.

Just isolate it from the vacuum environment of space.

But we humans don’t even have the technology to enter the deep sea yet.

The number of people who have entered the deep sea ten thousand meters is far rarer than the number of people who have landed on the moon.

You can know it from here.

Diving into the deep sea is more difficult than going into space.

If you look at it from a physical point of view.

The difficulty in surviving in space is simply the vacuum environment.

Other than that there is some cosmic radiation.

Basically it can be solved very simply.

And what about activities in the deep sea?

Seawater can penetrate anywhere, so there is the problem of water seepage.

There is another problem in the deep sea that does not exist in space.

That is the high-pressure environment of the deep sea.

The high pressure in the deep sea requires submarines to have very high pressure resistance.

Because just a tiny gap or mistake could crush the submarine.

Space is gaseous and the deep sea is liquid.

That underground world is deeper than the deep sea.

It's completely solid.

There is an additional difficulty in drilling compared to the deep sea.

Not only is the high pressure accompanied by high temperature.

Therefore, entering the earth is the most difficult of the three."

After listening to Ye Zhen’s popular science explanation, everyone had a new understanding.

Everyone used to think that going to heaven was the most difficult thing.

I didn’t expect that getting underground would be the most difficult.

After all, everyone has come into contact with land in their daily lives and has dug it to some extent.

How difficult do you think it is to dig a hole?

But now the audience seems to understand a little bit what Ye Zhen means.

"Now that Master Ye said that, it seems that the space station is really the one with the lowest technical difficulty."

"On the space station, we just need to isolate ourselves from the outside world and provide enough oxygen inside."

"But it's different in the deep sea."

"In the ocean 10,000 meters deep, you can only be in a sturdy submarine."

"It's impossible to go out diving in a wetsuit."

"There is also the underground world, which is more difficult than the deep sea."

So everyone seems to understand.

Why the civilization that can build an underground world is more advanced than ours.

Professor Yan Xin based on what Ye Zhen said.

I analyzed it in my mind.

"If you follow what Mr. Ye said."

"Mr. Ye means that the civilization that lives and develops on the surface of a planet is the most primitive."

"Because on land, there are abundant resources and open-air minerals."

“It is very easy to develop civilization.”

"The second option is to build a space station directly near the Earth, just like we are doing now."

“This is the next level of technology.”

"For example, now we want to colonize other planets." "Build a lunar base or a Mars base or something like that."

"The purpose of the space station is to gain experience in surviving in space."

Speaking of this, the people in the Psychic Laboratory thought of a piece of news that was not new.

They are two astronauts from Boeing of the United States.

The space program was originally planned to last eight days.

Because of the malfunction of the spacecraft, none of them have returned yet.

The plan was forced to last eight months on the space station.

This incident made Boeing Aerospace Corporation of the United States a global laughing stock.

The two astronauts are still on the space station.

"Higher than a space station, it would be the ability to build structures and survive in the deep sea."

"For example, building a base directly in the Mariana Trench."

This kind of scientific fantasy has existed in very early science fiction novels.

That is "Twenty Thousand Leagues Under the Sea".

However, there is actually a problem with the translation of "Twenty Thousand Leagues Under the Sea".

In fact, a more accurate translation should be "Twenty Thousand Leagues Under the Sea".

No matter how you look at the seabed, the data of 20,000 miles does not fit.

"Twenty Thousand Leagues Under the Sea" is included in the list of foreign books that must be read outside of class in elementary school.

If anyone really thought about it.

Have you ever wondered why the seabed is 20,000 miles deep?
Obviously this is inconsistent with the data we have measured now.

Because what others actually said was 20,000 leagues.

The league is an ancient unit of measurement in the ocean.

Simply put, it is the difference between nautical miles and kilometers.

Li is just an abbreviation for kilometers in our general sense.

Just like you shorten a nautical mile to a mile.

Kilometers and nautical miles are two completely different concepts.

1 nautical mile = 1.852 kilometers.

It’s just that when translating, it may be for the purpose of making it more easy to understand.

It is also possible that the translator did not understand this aspect when translating it.

Just directly translate "li" into "li".

Therefore, the correct name of "Twenty Thousand Leagues Under the Sea" should be "Twenty Thousand Leagues Under the Sea".

It’s just that we don’t have the technology used in “Twenty Thousand Leagues Under the Sea” yet.

The only thing that has been realized is the submarine.

In the psychic laboratory, Wu Xueyao thought of Guixu that Ye Zhen had mentioned before.

"If this is the order, then is the heavenly palace built in the sky?"

"The technology is not as advanced as the civilization in Guixu?"

When Professor Yan Xin heard this, he was stunned for a moment.

"In theory, that's true."

"Compared to building a base on the moon."

"It's much more difficult to build a base in the deep ocean."

"But the most difficult thing is to build a city underground."

"Among all of these, this is the most difficult and the most technologically advanced."

Those in the Psychic Laboratory heard Professor Yan Xin's reasoning.

This is indeed the case when combined with the actual situation.

There are fewer people on the surface than in the space station, fewer who have been in the deep sea, and fewer who have been in the underground world.

The ranking is like this, which also represents the difficulty of entering these places.

If you didn’t know before how advanced the technology of the super ancient civilization was that could enter the underground world to escape disasters.

Now everyone has a completely new understanding.

Because so far, the deepest we have drilled is only one-third of the mantle.

It has not been fully drilled through and is still far from reaching the Moho interface.

And it was only explored through a hard drill.

It's not that people reach a place more than 12,000 meters.

And more than 12,000 meters exceeds the depth of the Mariana Trench.

But even in the Mariana Trench, we have people who have reached its depths in submarines.

But the underground world is a completely unknown area for us humans. (End of this chapter)