Repeat students all get up very early in the morning.

Because I was reviewing morning reading in school, some even started at 6:30.

On a summer morning, Liu Chang opened his sleepy eyes, woke up the fat man who was snoring and his glasses who had been reading novels all night last night, and went to the bathroom to wash up with toiletries.

As for the good student Liu Tao, he has long since disappeared.

After washing up, Liu Chang walked to the door of the dormitory building and saw the foggy sky at first sight.

It is supposed to be less foggy in summer mornings, but in the past two years there have always been foggy mornings, and the fog in the past two years has always had a hint of pink, which gives people a strange feeling.

But if any strange thing lasts for a long time, it will become strange. Since the fog has been this pink for two years, and the weather forecast also said that this is just an ordinary "condensation core" phenomenon, so,

Chinese people are used to eating gutter oil, and no one cares about this kind of thing.

After walking out of the dormitory building, Liu Chang submerged his body in the mist, and could smell the sweet smell in his mouth and nose.

Walking through the fog all the way to the classroom, I started a day of study.

Drowsy, drowsy.

The morning passed. Liu Chang didn't know what he had read. He only remembered that he had been reading. He felt that this kind of life day after day was so boring that it made him want to die. He felt that everyone who lived a repetitive and monotonous life was...

It's a walking corpse.

Liu Chang longed for something exciting and a change.

I looked out the window, the pink mist still hadn't dissipated, and breakfast time passed in a daze.

Just like that, the first class began.

It's biology class.

Since last year, biology has been inexplicably made a compulsory course by the state - regardless of science. And the most bizarre thing is that the score of the college entrance examination for biology is 200 points by the state, which directly exceeds the language and mathematics and becomes the third

One course.

This is something that no one could have imagined, but the rigid regulations for the college entrance examination also make biology classes suddenly become particularly important.

Fortunately, Liu Chang still prefers biology, so his first class was not so confusing.

"Today I will review again a must-test point for the college entrance examination - the Cambrian Biological Explosion."

"This is the scope that must be tested every year for the past two years. No matter how many times you review it, it is not too much."

The speaker on the podium was the teacher who put Liu Chang and others to sleep last night. He was young, fair, and wore a pair of black-rimmed narrow-rimmed glasses. He didn't talk much during the lecture, but he could get to the point very well.

"The Cambrian explosion of life is one of the top ten mysteries in the scientific community today. The classmate who was sleeping at the same table called him up and asked him to answer what the Cambrian explosion of life was about."

The biology teacher pointed to Liu Chang, who was stunned for a moment, and then woke up his sleeping deskmate, Glasses.

"The teacher asked you a question, what was the Cambrian explosion of life?" Liu Chang poked his glasses with his elbow and whispered the question to the teacher at the same table.

The sweet dream was disturbed, and the glasses boy stood up reluctantly, adjusted his glasses that were skewed due to lying down for too long, and rubbed the wrinkles on his face that were pressed by the clothes, and then muttered: "Cambrian

The Great Explosion of Life was probably a few hundred million years ago, a sudden evolution of life on Earth. The rate of evolution was hundreds of millions of times that before. It seems to mean that there was no higher life before that, and then suddenly there was

, it seems that all the existing species on earth were produced during that period.”

"How about hundreds of millions of years ago? From what form did life evolve into what form? These are test points. You need to remember the specific numbers." The teacher waved his hand and let the glasses sit down.

"However, your summary is still good, but one thing must be remembered in particular. During the Cambrian explosion of life, not only did all species evolve at super-light speeds, but the emergence of new species also occurred at super-light speeds.

The ancestors of almost all current species were formed during that period, including sponges, coelenterates, branchial drag animals, lobopods, brachiopods, molluscs, arthropods, echinoderms, chordates, etc.

Now, all species came into existence during that era."

"Creation is amazing! The emergence of the Cambrian period is strong evidence to refute Darwin's theory of evolution. Darwin himself has always been puzzled by this matter."

"Teacher, are you questioning Darwin's theory of evolution?" A loud voice came from the corner of the classroom - it was the good student Liu Tao.

"Uh, yes, why not?" The glasses teacher smiled and said: "There are three levels of argument, nonsense - theory - law. Darwin's theory of evolution is just a theory. Why can't you question it?

You can question it, not to mention that he himself has questioned it."

"Since we have talked about it today, even though it is not a test point, I will mention it casually. It is about the cause of the Cambrian explosion of life."

"The current academic argument that is tenable is that the earth suddenly produced a large amount of free oxygen at that time, which led to a large number of widespread and rapid evolution of organisms. However, I feel that this argument is also full of loopholes. If it was just oxygen, how could it

Can living things reproduce and evolve at the speed of light?"

As soon as the teacher on the podium finished speaking, the classroom suddenly became dark.

"What's going on?" Liu Chang looked out the window.

The fog outside the window suddenly became thicker!

This is what causes the dimness.

The pink mist outside has not subsided since the morning, and now it has suddenly become thicker. Huge pieces of mist have filled the entire outside world, as if a large piece of cotton has been stuffed into the entire world, blocking it.

All light exposure.

Perhaps because the fog was too thick, the originally pink fog gradually turned into deep red, and then over time, turned into blood red at a speed visible to the naked eye.

The sunlight was completely blocked, and the whole world turned into darkness.

Or to be precise, the darkness was red with blood, and the world turned into a black and red color.

This weird color gave people a feeling of palpitations. Liu Chang turned around and saw that in the current classroom space, every student's face was black and red, and their facial features were blurred, which was frightening.

If it was just dark, there might be noisy classmates yelling, and there might even be naughty boys taking the opportunity to touch the girls' butts, but in this environment no one dares to speak.

Because the world is in darkness, everyone has experienced it.

But the world was filled with blood, and no one had ever seen it.

Every student saw the horrified expressions on the faces of the others, no one dared to speak, and the whole classroom was silent.

"I'll go to the Academic Affairs Office and ask to see what's going on?" In this solemn atmosphere, the biology teacher was the first to react.

He put down these words, opened the classroom door, and disappeared into the thick blood-colored fog.

"Look, the fog is drifting in." The fog is too thick and colorful, so everyone can be clearly seen when it comes through the cracks in the windows and doorways.

The glasses man sitting next to Liu Chang saw this scene and subconsciously covered his mouth and nose.

"It shouldn't be poisonous, and even if it is poisonous, how long can you hold your breath?" Liu Chang saw the thick red mist floating in front of him, sniffed it with his nose, and then smelled a strong fishy-sweet smell from inside.

"There's a strange smell!" The classroom had changed from silence at first to noisy now. After everyone was frightened, they began to discuss the strange weather.

"What the hell is this?"

"With the blood-colored thick fog, I guess there will be a lot of car accidents outside."

"The fog is so thick that I can't even see what's going on outside!"

"Call and ask about the situation at home." Liu Chang took out his cell phone and dialed his mother's number.

The response to him was a busy tone——————

"The call can't be made!" Liu Chang looked at the strange fog outside and felt a panic for no reason: "Can this thing also block the signal?"

"I'm going out to see the situation!" A bold student next to Liu Chang stood up and walked to the door.

And his action also attracted the attention of all the students. After he walked outside the door, everyone ran to the window to look at his situation.

The visibility outside the window was less than five meters. The bold student had just stepped out and before taking two steps, his figure was blurred.

"San'er, don't go any further. If you go further I won't be able to see you." A classmate who was close to him shouted out the window.

"Oh! Okay, it's really red outside. You can't see anything, not even the teacher's office." "San'er" outside the door also shouted back, his voice filtering through the mist, forming a small circle.

Small ripples.

Then...

Another ripple appeared in the air, and a group of small sparrows passed through the thick fog and rushed towards the source of the sound.

A "swish" sound——

The usually timid sparrow was now as fearless as a bomber, crashing into "San'er"'s cheek at an extremely fast speed.

Bang!

When the first sparrow came into contact with "San'er"'s face, it made a strange sound like a smashed tomato, and then the strange "squeaking" sound continued continuously.

Liu Chang opened his eyes and saw that after "San'er" let out his first short scream, his entire face was pecked through by the sparrow's sharp beak, and then he was swarmed by the subsequent flock of sparrows. In less than a moment,

, his entire face was ruined into a ball of rotten watermelon.

"ah----------!"

San'er screamed loudly and was pushed to the ground by successive impacts.

However, his screams lasted only a short time, and then his own flesh and blood might have been sucked into his trachea or mouth. The "San'er" lying on the ground could no longer scream, only "vomited" from his throat.

"Gurgling" sound.

And those usually docile sparrows started pecking at the fresh flesh and blood amidst the "clucking" sound.

This time the classroom was truly shocked and frightened, and all the students were stunned.

Even in horror movies, they have never seen such a terrifying scene.

The classmates who were alive and kicking just now were squirming on the ground now, and the usually timid sparrows were doing the most bloodthirsty things. At this moment, no one dared to go out and stop the group of sparrows, or in other words, the panicked crowd.

No one in the world expected this.

Everyone was stunned.

It wasn't until the sated sparrows flew away and the people on the ground stopped squirming that anyone came back to their senses.
Chapter completed!