Cheng Lin was really shocked by this piece of information in his mind.
This time span has exceeded his imagination.
How old is the entire human civilization?
Ninety thousand years... This huge time scale is too grand for one person, so much so that it took Cheng Lin several seconds to realize it.
He also immediately realized that the reason why snowflakes appeared on the windows was probably because ninety thousand years of time were compressed and played back quickly. The frequency of image switching had exceeded the ability of his eyes to capture it.
Cheng Lin remembers reading a statement in a magazine that the switching of movie frames at just 24hz is enough to exceed the "visual frequency limit" and deceive our visual system into being treated as continuous.
When this frequency is too fast, it will cause some strange visual phenomena, such as the brain's ensemble statistis phenomenon and attention blinking phenomenon.
Cheng Lin felt that the snowflake was probably caused by the "game" in the computer to protect his eyes.
When you think about it, it's quite considerate.
"Wow."
Thinking of this, Cheng Lin looked out the window again. Ninety thousand years had passed since the earth outside.
The landscape has undergone tremendous changes.
A mountain peak rose up from the ruins of the original city!
There is also a river under the mountain peak, which runs east-west and has no end in sight.
The earth is still barren, there is no green, no plants, and the entire planet is still lifeless.
"What happened in the past 90,000 years? Is the earth's crust moving?"
Cheng Lin couldn't help but take a breath, very surprised.
Even if he is a scumbag, he knows that it takes a long time to form a mountain peak.
Of course, the peaks here refer to real "mountains", not the islands and peaks formed after volcanic eruptions, which lasted only a short time.
[Ninety thousand years have passed, and the world has changed. When you see the mountains and rivers outside the window, you are filled with emotion. However, it seems that there is still no life on the earth. But you don’t know that at this moment, there are already eukaryotes in the oceans and rivers.
Appear quietly]
"Eukaryotes?"
Cheng Lin was stunned for a moment, and then a sense of shame arose spontaneously.
He didn't understand it, he just thought the word was familiar... It seemed like it was taught in biology class...
He subconsciously picked up his mobile phone and wanted to search online, but found that his mobile phone could not connect to the Internet at all.
Obviously, when the world is being deduced, the space you are in has been separated from the world, and it is even impossible to access the Internet.
Fortunately, there are still books.
Cheng Lin ran to his desk in a few steps. There were a bunch of unthrown textbooks on the bookshelf. He picked one and started to read. Soon, he finally found the definition of eukaryotic cells.
"Eukaryotes (scientific name: eukaryota) is a general term for single-celled organisms and multicellular organisms whose cells have nuclei. It includes all animals, plants, fungi and other organisms with complex subcellular structures wrapped by membranes."
…
I couldn't understand it, so I turned two more pages and suddenly saw a picture. Cheng Lin suddenly understood.
"It's just something like flagellates..."
No wonder the name felt familiar. Cheng Lin remembered this thing mainly because it looked ugly.
Giardia... is a very rudimentary organism that lives in water. There is a lot of knowledge about it, and the most eye-catching thing is... it can carry out photosynthesis!
Photosynthesis!
What does this mean? It means that after this thing appears, the earth will not be far away from rejuvenation!
"But according to what is written in the book, according to the order of the emergence of life, the first one should not be eukaryotic cells, but prokaryotes such as bacteria and cyanobacteria. They can produce oxygen, which provides the basis for the development of later organisms.
Foundation."
Cheng Lin held the book and was a little confused.
After a while, he suddenly slapped his head and woke up.
"After all, this is not the birth of the earth, but rebirth! Many are different. There is oxygen outside now!"
He still remembered that the last time he went out, the oxygen content in the air was already sufficient.
"In other words, the rhythm of the appearance of creatures in front of me is very different from that in ancient times."
Cheng Lin felt that his guess was very reliable and was about to continue thinking when another piece of information appeared in his mind.
[You gradually figured out some clues, but the world did not stop because of your thinking. In the blink of an eye, 500 million years have passed]
Cheng Lin: "..."
Surprisingly, the impact of 500 million years on him was not as great as the previous 90,000 years.
After all, when numbers exceed cognition, whether it is 90,000 years or 500 million years, they all become a series of dry numbers.
The windows turned into snowflakes again.
This time it took a lot longer.
After a while, the snowflakes disappeared.
【500 million years have passed】
[During this short period of time, the earth's oxygen content increased significantly, and algae once dominated the planet. But today, the first naked fern after the earth's destruction and rebirth successfully landed on land]
Before Cheng Lin had time to take a closer look out 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 from ferns]
[Next, the dominance of ferns was gradually replaced by gymnosperms. Afterwards, there were several ice ages on the planet. Most of the gymnosperms gradually disappeared and were replaced by angiosperms. With the evolution of plants, these
Many animals once appeared on this planet]
[Over the course of hundreds of millions of years, these animals appeared and disappeared, and experienced several changes. Dragons once ruled the planet, and even gave birth to such creatures as the Mysterious Frost Dragon, the Flame Emperor Dragon, and the Star Epic Dragon King.
Powerful Life】
[It’s just that due to the unexpected blow in the universe, this dragon civilization hastily ended before it officially showed its glory]
"etc!"
Cheng Lin was still listening carefully at first, but as he listened, some strange words suddenly appeared in his mind.
Dragons rule the planet?
Are you referring to dinosaurs?
It doesn't seem right. Things like the Mysterious Frost Dragon, the Flame Emperor Dragon, and the Star Epic Dragon don't look like the names of dinosaurs, do they?
It’s more like a setting in some fantasy novel or online game.
This civilization deduction seems to have secretly gone astray!
"I need a reasonable explanation!"
Cheng Lin protested seriously.
[Witnessing the changes in time on the planet for hundreds of millions of years, many questions arise in your mind. However, the twists and turns of civilization need no explanation, and a long, long time has passed...]
Cheng Lin was speechless. Not only did the co-author not explain, but now he didn't even give an accurate time.
I had clearly told myself before that tens of thousands of years had passed, hundreds of millions of years had passed.
Nowadays, the description of time has changed to words such as "a long time".
My head hurts, but there is nothing I can do.
Cheng Lin could only throw down the book and return to the window covered with snowflakes.
[After the era of dragon rule ended, the oxygen content of the planet gradually declined and could no longer support the existence of powerful life. Therefore, the size of the creatures on the planet gradually shrank]