On the system panel,

Su Fei noticed a line of information:

[Maximum flight speed: 3.4 kilometers per second (10 times the speed of sound)]

Su Fei has not personally flown such a fast speed, the fastest attempt is only three times the speed of sound.

Therefore, the theoretical value displayed on the system should be theoretical.

After advancing to Level Planet 1, it is theoretically possible to increase the speed to 10 times the speed of sound.

Su Fei intends to try it out for herself.

He's 25,000 meters in the air.

Here the air is scarce, there is almost no water vapor,

However, as far as the eye can see, the field of vision is a faint blue.

These blue gases are the ozone that protects the earth!

Su Fei can smell a strong fishy smell, which is exactly the smell of ozone.

Ozone can absorb most of the ultraviolet radiation and play a role in protecting the earth.

However, this kind of thing is also harmful to the human body.

When the concentration is too high, it will seriously affect the respiratory system of the human body, causing breathing difficulties, which can be fatal in severe cases.

And where Su Fei is at the moment,

It is the place with the highest concentration of ozone on the earth, the ozone layer.

He had a faint feeling of suffocation,

Although it is to master the ability of [turtle breath],

But oxygen is extremely scarce here, ozone concentration is very high.

So Su Fei also felt a little uncomfortable.

Fortunately, his evolutionary ability is very powerful.

One second, two seconds, three seconds...

Ten seconds later!

Su Fei evolved and adapted to the ozone layer.

At the moment his breathing rate has reached a terrifying hourly hour,

And the heartbeat rate is also beating once an hour!

His dependence on oxygen is already very weak, almost equal to zero.

After adjusting to your physical condition,

Su Fei did not stay too much in the ozone layer,

Instead, it began to accelerate and flew higher!

Double the speed of sound... Twice the speed of sound ... Three times the speed of sound ...

Su Fei's speed, faster and faster,

At five times the speed of sound,

Ice wings spread out behind him for a deeper acceleration!

Six times the speed of sound... Seven times the speed of sound ... Nine times the speed of sound...

Ten times the speed of sound!

In three seconds,

Su Fei finished from 0, accelerating to ten times the speed of sound!

Ten times the speed of sound, that's 3.4 kilometers per second!

This speed is still very terrifying on Earth,

That's equivalent to running ten laps around the football field in one second.

After accelerating, Su Fei flew out of the ozone layer in just two seconds.

Reached a height of 30,000 meters!

After crossing the ozone layer,

Su Fei did not slow down,

Still maintaining ten times the speed of sound, he rushed towards the higher heavenly dome.

Thirty-five thousand meters...

Forty thousand meters...

Forty-five thousand meters...

Fifty thousand meters...

55,000 meters!

In less than ten seconds,

Su Fei came to an altitude of 55,000 meters.

This is another tipping point!

Fifty-five thousand meters below, is the stratosphere,

In the stratosphere, the air is mainly moving horizontally, and the vertical mixing of air is significantly weakened, so it is much more stable than the troposphere below 20,000 meters.

And here there is very little water vapor and dust, the weather is clear, and the atmosphere is extremely transparent.

So Su Fei flew across the stratosphere all the way, very smoothly, and did not encounter any difficulties.

Starting from 55,000 meters and flying up, you first have to pass through the middle layer.

The air in the middle layer is extremely thin!

The temperature is also extremely low, reaching more than minus 100 degrees Celsius.

But for Su Fei, these are no longer a problem.

Turtle Breath Ability, which can free him from dependence on air and oxygen,

And his body, wearing ice armor battle suit, was originally extremely cold,

Su Fei's skin has long been adapted to this low temperature environment,

Even a temperature of more than minus 100 degrees will not affect him much.

Su Fei continued to rush upwards!

60,000 meters...

70,000 meters...

80,000 meters...

85,000 meters!

For almost ten seconds,

Su Fei came to an altitude of 85,000 meters!

Here, it will be another threshold!

Because beyond here,

It will be put to the test:

Radiation!

That is, solar ultraviolet rays and cosmic rays.

The air here is basically exposed to the cosmic background.

Therefore, it will be subjected to the direct action of ultraviolet and cosmic rays, producing ionized gas,

The temperature of the air will be very high, reaching more than a thousand degrees!

When an astronaut is in this environment, if he is not wearing protective clothing,

Then his skin will be burned by ultraviolet rays and rays,

Blood, saliva and so on in the body... will all boil!

In less than two minutes, the body will burst.

Not even the bones may be left!

And what worries Su Fei the most,

It's cosmic rays originally, which cause radiological damage.

You know, the reason why the atomic bombing was terrifying,

And not because it explodes to destroy many things,

But because it is radioactive!

Destroy the ecology, cause permanent fatal damage to the human body, and even inherit it!

Human cells and genes can produce uncontrollable mutations in radiation!

And Su Fei has a trillion times the rate of evolution.

Undoubtedly, it will accelerate the process of mutation!

So the radiation environment above still makes Su Fei pay attention to it,

He did not dare to be careless,

Even if your vitality is tenacious, you can't die.

When it's time to be cautious, be cautious.

Su Fei temporarily stopped and continued to fly up,

Ten times the speed of sound into 1 meter per second.

Although at ten times the speed of sound, it is very refreshing to soar,

But in this dangerous situation, it is still slowly flying up, adapting,

Get acquainted with cosmic rays.

You can't take too big a step.

From 25,000 to 85,000 meters, Su Fei went all the way.

And then, meter by meter, he tentatively floated up.

Su Fei observes and feels her surroundings...

At the moment......

On the ground,

His wife, Yunxi, has landed at Yangcheng Airport.

Originally, Yangcheng Airport was a plain airport, which was very close to sea level,

But now, with sea levels dropping by more than three thousand meters,

Yangcheng Airport has become a plateau airport.

Yunxi stepped on high heels and wore a long black skirt, outlining her beautiful figure,

She pulled the long hair scattered on her shoulders into a bun and tied it on the top of her head, revealing full intellectual beauty in her charm.

Get out of the plane,

A feeling of dizziness with lack of oxygen,

Yunxi slowed down for a few minutes and adapted,

Her genes are also very strong, and her body is very adaptable.

Without much rest, Yunxi planned to go to the Academy of Oriental Sciences immediately.

Several military vehicles came to pick her up in person, and police cars opened the way.

After coming to the Academy of Oriental Sciences,

Yunxi was warmly welcomed.

In the last apocalypse, her scientific research level was the second most important person after Su Fei.

"Professor Yun, our Academy of Oriental Sciences is waiting for you to work together to develop gene medicines."

"We have a thing Chief Su here, you must be very interested."

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