"Nine...... 90,000 years? ”

Cheng Lin was really taken aback by this piece of information in his mind.

This time span is beyond his imagination.

How many years has it been since the whole human civilization?

90,000 years...... This huge time scale was too grand for a person, so much so that Cheng Lin was stunned for several moments before he reacted.

He also immediately realized that the reason for the snowflakes in the window was most likely due to the fact that 90,000 years of time had been compressed and played quickly, and the frequency of this image switch was beyond the ability of his eyes to capture.

Cheng Lin remembers reading a statement in a certain magazine that the switching of movie images as long as 24Hz is enough to exceed the "visual frequency limit", deceiving our visual system and being treated as continuous.

When this frequency is too fast, it can lead to some strange visual phenomena, such as the Ensemble Statistics phenomenon of the brain and the phenomenon of transient detachment of attention.

Cheng Lin felt that this snowflake was probably done by the "game" in the computer, in order to protect his eyes.

Thinking about it this way, it's quite intimate.

"Wow."

Thinking of this, Cheng Lin looked out the window again, the earth outside had spent 90,000 years.

The landscape has changed dramatically.

On the ruins of the original city, a mountain was raised!

There is also a river under the peak, which runs in an east-west direction, stretching with no end in sight.

The earth is still barren, there is no green in sight, there are no plants, and the whole planet is still free of life.

"What has happened in these 90,000 years? Does the earth's crust move? ”

Cheng Lin couldn't help but take a breath, very surprised.

Even a scumbag knows that the formation time of a mountain peak is naturally long.

Of course, the peaks here refer to the real "mountains", not the islands and peaks that formed after volcanic eruptions, which are very short.

[90,000 years have passed, the vicissitudes of the sea, you see the peaks and rivers outside the window, and you are full of emotion, but it seems that there is still no life on the earth, but you don't know that at this moment, in the oceans and rivers, there are already eukaryotic organisms quietly appearing]

"Eukaryotes?"

Cheng Lin was stunned for a moment, and then a kind of shame arose.

He didn't understand it, he just thought it was familiar...... Like, biology class talked about it......

He subconsciously picked up his mobile phone and wanted to search on the Internet, but found that the mobile phone could not be connected to the Internet at all.

Obviously, when the world is deduced, the space you are in has been detached from the world, and it is even more impossible to go online.

But luckily there are still books.

Cheng Lin ran to the desk in a few steps, there was a pile of textbooks on the bookshelf that had not been thrown away, he picked one and began to flip through it, and soon, he finally found the definition of eukaryotic cell biology.

"Eukaryota (scientific name: Eukaryota) is a general term for single-celled and multicellular organisms whose cells have a nucleus, and it includes all animals, plants, fungi, and other organisms with complex subcellular structures surrounded by membranes."

……

I couldn't understand it, so I turned two more pages, and suddenly saw a picture, and Cheng Lin suddenly realized.

"It's a flagellate......

No wonder the name feels familiar, the reason why Cheng Lin remembers this thing is mainly because it looks ugly.

Flagellates...... A very rudimentary creature that lives in water, and there is much to know about it, the most notable of which is...... This product can photosynthesize!

Photosynthesis!

What does this mean? It means that after this thing appears, it is not far from the rejuvenation of the earth!

"However, according to what is written in the book, according to the order of the appearance of life, the first should not be a eukaryotic organism, it should be a prokaryotic organism such as bacteria and cyanobacteria, which can produce oxygen, which laid the foundation for the development of later organisms."

Cheng Lin held the book, a little puzzled.

After a few moments, he suddenly slapped his head and came to his senses.

"This is not the birth of the earth after all, but the rebirth! A lot of it is different, and now there is oxygen outside! ”

He still remembers that the last time he went out on his own, the air was already full of oxygen.

"In other words, the rhythm of the creatures in front of me is very different from that of ancient times."

Cheng Lin felt that his guess was very reliable, and was about to continue thinking, when information appeared in his mind.

[You gradually figured out a little clue, but the world did not stop because of your thinking, in a blink of an eye, 500 million years have passed]

Cheng Lin: "......"

Surprisingly, the impact of 500 million years on him was not as good as the previous 90,000 years.

After all, when the numbers exceed the cognition, whether it is 90,000 years or 500 million years, it becomes a string of shriveled numbers.

The windows turned to snowflakes again.

This time it's a lot longer.

After a while, the snowflakes disappeared.

[500 million years have passed]

[In this short period of time, the oxygen content of the earth has risen dramatically, and algae once ruled the planet, but just today, the first naked fern plant after the destruction and rebirth of the earth successfully landed on land]

Before Cheng Lin could take a closer look out of the window, he found that the window had turned into snowflakes again.

Time continues to roll forward.

[For the next 90 million years, the earth was dominated by various ferns, and the most primitive gymnosperms and angiosperms evolved among ferns]

[Next, the dominance of ferns was gradually replaced by gymnosperms.] After several glacial periods on the planet, most gymnosperms gradually disappeared and were replaced by angiosperms, and along with the evolution of plants, many animals appeared on the planet at one time.

[In hundreds of millions of years, these animals appeared and disappeared, and after several changes, the dragon once ruled the planet, and even gave birth to powerful beings such as the Frost Dragon, the Flame Emperor Dragon, and the Star Epic Dragon King]

[It's just that with the unexpected blows in the universe, this dragon civilization has not officially shown its brilliance and has come to an end in a hurry]

"Wait!"

Cheng Lin was still listening carefully at first, but as he listened, he suddenly thought that some strange words appeared.

Dragons rule the planet?

Is it referring to dinosaurs?

It doesn't seem right, what kind of thing like the Frost Dragon, the Emperor Dragon of Fire, and the Star Epic Dragon doesn't look like the name of a dinosaur, right?

It's more like a fantasy novel or an online game.

This civilization deduction seems to have secretly deviated!

"I need a reasonable explanation!"

Cheng Lin protested solemnly.

[Witnessing the changes of time on the planet for hundreds of millions of years, many questions arise in your heart, but the twists and turns of civilization do not need to be explained, and a long time has passed......]

Cheng Lin was speechless, not only did he not explain the co-authorship, but now he didn't even give the exact time.

I also clearly told myself that tens of thousands of years, hundreds of millions of years have passed.

Now the description of time has changed to words like "for a long time".

The skull hurts, but there is nothing I can do.

Cheng Lin could only throw down the book and come back to the window covered with snowflakes.

[After the end of the era of dragon rule, the oxygen content of the planet gradually declined, and it could not support the existence of powerful life, so the size of the creatures on this planet gradually decreased]

[At a certain moment, human beings were born]