"Bang!"

Tang Zheng fell heavily to the ground and gave a painful cry of sour teeth.

"Hiss..."

He didn't reach out to touch his back, but he could obviously feel a cool wind coming from his back and pouring into his inner body.

His internal organs seemed to be exposed to the air, and the burning pain continued to stimulate his brain.

Tang Zheng looked back for the first time regardless of the pain.

At the originally broken boundary, it has been polymerized and formed, and the external traction layer pressure cannot penetrate.

From this perspective, he could even vaguely see a giant blue moon hovering over his head.

It's like going deep into the seabed, and the water waves reflect all kinds of strange luster.

Light cannot penetrate, but the light from the outside can be clearly seen inside.

He's finally safe.

Successfully entered the interior of the holy land of civilization.

It was dark around. Tang Zheng opened the light curtain, took out a needle and plunged it into his body.

This is a cortical healing hormone developed by the latest technology.

Combined with their own constitution, a needle can obviously feel that the skin on the back is healing rapidly.

About ten minutes later, Tang Zheng touched his back again. It was as smooth as new life.

He had time to look around.

His current position is a dark cave, and the light source is completely impermeable.

But behind the light, relying on the light provided by the light curtain, he can see everything around him.

Looking around, here is a very common cave. In any mountain in the human world, there are 180 such caves, which are very common.

"It seems that the interior of the holy land of civilization is also a part of the ball of the alien world. It has the air pressure and temperature suitable for human survival, including the air." Tang Zheng thought to himself.

Different from the outside world, if you want to enter the holy land of civilization, you must go through an absolute traction layer up to 300 meters.

This alone is enough to embarrass almost everyone.

"No, it's not 300 meters... It's 1500 meters." Tang Zheng looked up, and the light wave emitted by the water like "blue moon" splashed gently on the border above his head like ripples.

He suddenly realized the problem.

The height has always been 1500 meters, and 300 meters is only the height estimated by the outside world.

But he ignored one thing.

The strong pull here can bend the light.

In addition, this is a basin, which is a huge natural concave mirror.

The distance observed by humans from the outside is emitted by curved light.

That's why it leads to miscarriage of justice.

"Fortunately, it's a close call." Tang Zheng breathed a sigh of relief, unfolded the light curtain and walked forward.

The cave was very long. He walked about hundreds of meters, but he still didn't see anyone, including life.

This time, Tang Zheng accelerated a little and began to run forward.

Out of the corner of his eye, he observed everything around him.

No,

Nothing.

In addition to the jagged stone walls on both sides, there is an endless road ahead, hidden in the dark.

"No, as the last forbidden area, the holy land of civilization should not be so empty." Tang Zheng muttered in surprise.

Speed up this time.

Up to the speed of sound!

"Buzz!!"

The sonic boom came from behind his ears, and the air stirred his broken hair in front of his forehead.

About half an hour ago.

Bang!!!

There was a huge explosion on the road ahead, like a bomb hidden in the dark.

Tang Zheng stopped hurriedly.

When the aftersound of the explosion gradually spread, he finally saw a faint light in front of him.

It's like being in a deep tunnel and seeing a small white spot in front. Everyone knows that it's the exit.

With a new goal, Tang Zheng ran with all his strength again.

The white light is getting closer and closer to itself.

Ten thousand meters.

Kilometers.

100 meters.

Shua!!!

After he rushed out of the cave, his eyes suddenly opened up.

Blue sky and white clouds, surrounded by an endless ocean.

What shocked Tang Zheng was that he didn't start flying now, but he was still floating in the air.

There seems to be an invisible pedal under your feet.

He was in the middle of the sea.

A great sense of loneliness and smallness swallowed him up.

In particular, a huge wave of thousands of feet coming head-on, just like the mouth of an abyss.

Tang Zheng lost her potential and could only protect her chest with both hands.

But to his surprise, the huge wave passed through his body, hit the rear and splashed huge water.

"Eh?" Tang Zheng tried to reach out and touch the surroundings.

But I didn't take two steps, but I touched the invisible wall.

"I haven't come out of the cave yet!"

Tang Zheng finally came to a conclusion.

It's not so much a cave as an illusion.

All he could walk was a void corridor that had been set up for him.

The cave he had seen before was an illusion. Whenever he touched it, he would find that what he touched was not the jagged stone wall, but the square corridor that imprisoned him.

He ran for half an hour and came to the other side of the corridor. What he saw was the ocean.

Now it is clear that Tang Zheng has no other way to go.

Can only move forward.

Tang Zheng began to run. This time, he used all his speed to sprint on the seemingly endless corridor of nothingness.

It's like a sea train speeding on the ocean bridge, trying to cross the endless sea.

More than ten minutes later, I don't know whether the terrain of the nothingness corridor has become lower or the scene in front of me has changed.

Tang Zheng obviously felt that the sea level around him was getting higher and higher.

Finally, he "rushed" into the ocean.

You can even hear the sound of "gurgling" under the water.

It's like entering the underwater aquarium.

The sea water still failed to devour the nothingness corridor. The corridor is still the most suitable ground environment for human survival, air, slight wind flow and suitable temperature.

Around her eyes, there were no creatures, only the sunlight on her head was telling Tang Zheng, and all this was going on.

He moved on.

Suddenly.

A flat green bug passed in front of him.

Tang Zheng slowed down and moved forward. He found that the more insects there were.

They float irregularly in the ocean, like dust without a place to live.

Further on, new species appeared.

A sphere, full of life with pink smooth surfaces.

Their volume is three or four times larger than the original flat green insects, which is the size of the fist of Tang Zheng.

Move on.

He slowed down again, just like visiting the Hai Nationality Museum. He walked slowly forward, looking at the pink life everywhere.

"Huh?"

Tang Zheng inadvertently glanced forward.

I saw a pink life body in front of me splitting slowly.

With a slight 'Bo' sound, it turned into two pink spherical creatures.

"... it's like cell division... Wait a minute?" Tang Zheng suddenly realized something.

Cell division?

He opened the encyclopedia and scanned it quickly using the intracranial storm.

The flat bug he saw just now is called

"Prokaryotic cells, these single celled organisms are the origin of all life!"

"Now, eukaryotic cells have more complex structures than prokaryotic cells, and the body has self replicating DNA."

"It is precisely because DNA has the structure of unlimited replication that the original life bodies can spread all over the planet and evolve into countless species. After all, there is no reproduction at the beginning. Reproduction is also a function only after biological evolution. The original life bodies want to expand their race by relying on the special properties of DNA..."

Tang Zheng took his eyes back from the encyclopedia, with a somewhat shocking look in his eyes.

In this way, DNA (deoxyribonucleic acid), the great hero at the beginning of all life, is the most legendary thing.

It is like learning to copy itself for no reason, and self replication is almost an incredible superpower in human science and technology.

This super power is contained in the DNA of the originator of all life.

Where did they learn this?

Even if Tang Zheng opened the intracranial storm, he still couldn't understand it.

At present, the best explanation is to give.

The superior gives them this ability.

Or species with a higher dimension than the superior give them this ability.

"What a holy land of civilization... Do you want to show me the original origin of all things here? This corridor is the birth and formation of the whole biological chain."

"Will the end of the corridor be the end of life?"

Tang Zheng has some expectations, but also some fears.

What human beings fear most is not the known problem, but the unknown.

Tang Zheng has completely understood the mechanism of this corridor.

Moving forward is evolution.

Retreat is degeneration.

The evolution of species is determined by his steps!

He urged his feet again. This time he didn't choose to fly, but walked forward quickly.

In the huge ocean current, it is like a natural hotbed for life.

As he walked forward, these pink eukaryotic cells began to grow a thin cell membrane, just like humans put on clothes for themselves.

"The birth of cell membrane is the first link of species evolution. It enables these extremely small creatures to find a way to protect themselves in the fierce nature." Tang Zheng glanced at the encyclopedia and took it back.

Keep moving! Continue to evolve!

Then, the outer layer of these cells began to grow a furry tail like thing.

"Flagella, which evolved from cell bodies, gave cells the ability to move independently."

Then Tang Zheng found that these cells had flagella and began to run around in the ocean.

But it is not without purpose.

They move in order to find more compatriots and get together.

Formed cell groups one by one.

It's like a vine full of grapes.

A complete combination of cell groups, enough to have a hundred times the size of the original cells.

At this time, look at the "flat worms" that pass by irregularly, that is, prokaryotic cells.

It's only the size of a grain of rice.

Then there is the combination of cell groups and cell groups.

Tang Zheng quickened his pace.

Finally, after thousands of meters, I saw the first multicellular life in biological history.

Sponges.

When the cells gathered to a certain extent, they began to divide labor successively and formed a big 'family'.

Sponges are also born. They look like coral tubes.

But they have more evolved abilities than single-cell organisms.

They have the ability to eat.

You can grow faster by eating.

The staple food is prokaryotic cells in the ocean current.

Typical I eat myself.

Moreover, sea animals have learned to use light sources on the water.

Chloroplast, which contains a large amount of chlorophyll, is also an important ability of photosynthesis.

Tang Zheng's eyes lingered in the ocean and marveled at the particularity of these creatures of origin.

The evolution of these organisms has never made any sense. They began to aggregate, eat and produce chloroplasts out of thin air.

It seems that in order to adapt to the environment, it will.

That's the most amazing thing.

It was also at this moment that the long-standing cell family began to divide.

From biology, it split into animals and plants.

The lazy multicellular creatures eventually evolved into ancient plants.

The hyperactive cellular organisms evolved in the direction of animals.

At first, plants and animals were homologous. They had no spine, and even their shapes were almost similar.

With the evolution of slowly adapting to the environment, immovable plants give birth to roots, stems and leaves to complete their reproduction.

In order to eat better, swimming animals evolved tails and fins.

But both plants and animals are aware of a problem at this time.

By asexual division and reproduction, this group can never progress.

Their civilization at that stage could not be promoted.

In each split reproduction, an individual splits into two smaller individuals.

When the two individuals mature, they are classified again.

So repeatedly, individuals will only grow to a certain scale and begin to shrink.

As a result, organisms began to evolve into both sexes.

Through sexual mating and reproduction, the individual's own volume will not be destroyed, but has more species.

"Reproduction, whether asexual division or bisexual reproduction, is a big step in biological progress." Tang Zheng sighed softly after observing the mating of these oldest species.

Reproduction is something that all creatures do, but sexual reproduction is only a branch of the way of individual division at first. It is a choice that organisms have to make in order to preserve this species.

As for "why preserve this species", where did this idea come from? Ancient cells didn't even have consciousness. How did they know to preserve their species and make better evolution.

This is also a puzzle that human beings have not been able to solve so far. It is the second argument of the three ultimate philosophies of human beings.

"Further on, the birth of fish." Tang Zheng began to speed up his pace again.

He witnessed the birth of life along the corridor of civilization.

Next, he is about to end his life.

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