Hours passed, and after several batches of students were picked up one after another, the bus gradually became crowded.

The sun had already set, and there was less than an hour's drive left to reach the terminal.

The train is now speeding over the no-man's land of the great northwest, and occasionally a bare desert plant or two passes outside the window, leaving only a desert Gobi.

A little farther away, it was pitch black and nothing could be seen, not a single house, not a single light.

Tu Ling'er fell asleep wearing an eye patch.

Look at the comfortable look she looks nestled in the chair sofa.

Mu Yun wondered if he might sleep for a while.

Qu Ruolan beside her lowered her head and was concentrating on reading.

The title of the book is "The Art of Travel".

Mu Yun glanced at the contents of the book and saw a paragraph on it: "...... Trains are perhaps the most thought-provoking thing: compared to ships and airplanes, we never worry that the scenery outside the window may be monotonous because they are always flowing, and that it is not too slow for us to lose our patience or too fast for us to discern the view outside the window. As we travel, the train allows us to glimpse some of the private spaces of others, and it also allows us to look back on all the joys and losses of our own past. ”

Qu Ruolan saw Mu Yun leaning over, and asked with a smile: "What, you are also interested, do you want to come over and watch it together?"

"No, but look at the passage......"

Mu Yun shook his head, and put his finger in the position of the paragraph again.

"Obviously, this has been going on for a certain number of years, right? In the past, people had to ride the slow green train, so they could say things like 'moderate speed' and 'not too slow and not too fast'. ”

"But now people generally take the high-speed train, and the speed of the Harmony has reached 300 kilometers per hour, not to mention the train we are taking now. ”

Saying that, Mu Yun pointed to the scale on the wall, "Now that you still look at this kind of literary and artistic works that are divorced from reality, don't you feel a little out of place with reality?"

Qu Ruolan: "......"

He was actually speechless by Mu Yun's soul questioning.

Suddenly, the car shook violently.

Outside the window near Mu Yun's side, there was a dull whirring sound, as if the train was drilling through a long tunnel.

Qu Ruolan gently closed the book.

"No, keep watching. ”

Mu Yun hurriedly said, he thought he had disturbed Qu Ruolan's reading Yaxing, "I just said it casually." ”

"Shh......h

However, Qu Ruolan raised a finger and motioned for Mu Yun not to speak.

Only then did Mu Yun see that the expressions of everyone around him had become different from Fang Cai.

Tu Ling'er woke up and pushed the blindfold on her forehead with her slender fingers;

The PSP screen in the hands of the anime president is still fighting fiercely, but the display in the upper left corner has been switched to automatic mode;

The most exaggerated is the student president, he stretched back his hands, held the two knife handles, his brows wrinkled into a deep "Chuan" character, the green tendons were highlighted, and he looked like he was struggling with constipation.

WTF？？？

Mu Yun looked confused.

Why did everyone suddenly look like they were facing a great enemy?

Can anyone tell me what's going on?

The shaking of the body is over.

“...... 18 seconds. ”

Qu Ruolan said suddenly.

Mu Yun couldn't help but ask, "What 18 seconds?"

"The shaking of the body just now is due to the phenomenon of 'boat suction' on one side of the train. ”

The secretary on the side explained in a low voice: "Our train is speeding on the tracks at a speed of 900 kilometers per hour, and the 'boat suction' just now lasted for up to 18 seconds!"

As a high school science student who had just graduated, Mu Yun immediately understood.

According to Bernoulli's law of fluid mechanics, the greater the flow velocity of a fluid such as water and air, the lower the pressure.

The lift of the aircraft is the upward pressure generated by the inconsistent air flow speed above and below the wings;

If two ships moving in parallel at sea get too close to each other, they will collide, which is the phenomenon of "ship suction".

In the process of driving, when the train passes by another train, the body will shake due to the phenomenon of "boat suction".

But isn't that normal?

“...... So？”

Adhering to the principle of asking if you don't understand, Mu Yun is not afraid of being embarrassed at this time.

He decided to continue asking, "So what are you all nervous about?

"No, we're not going to go through any tunnels on this road we're on, and there's only one railroad track, so there's no other train going through it. ”

As soon as Mu Yun was about to ask again, Qu Ruolan continued: "I know what you want to ask, I can answer you very responsibly: it was a 'creature' who just passed by our train.

"The only question now is, is it just going in the opposite direction of us or is it chasing our car?

"If it's the former, then the creature is just four kilometers long, even if it's still now;

"If it's the latter, then it's walking on land at a speed of 800 kilometers per hour, and the one who can 'suck' with a train has to be at least a creature of the level of a whale!"

After listening, Mu Yun felt his scalp tingle.

No matter how you look at it, such a 'creature' can only exist in myths and legends, right?

But the six-eared macaques have come out, who will be the monster this time???

And Qu Ruolan's voice was small and urgent.

It took almost all of the long passage just now to finish it all in one breath.

- This shows that the current situation should be really urgent.

Mu Yun was immediately moved.

In order not to look stupid and stupid, the bigwigs explained to themselves so patiently in such a desperate situation!

The secretary seemed to see through Mu Yun's thoughts.

He smiled and said, "We just don't want you to die in vain." ”

What the heck!

Tell me what will happen and you may die!

Suddenly, the body shook again.

This time, Mu Yun finally heard clearly.

In addition to the grinding sound of the wheels of the train running on the tracks, there was another grinding sound, like the sound of scales rubbing against the gravel as a snake's belly crawls against the ground!

And it's coming from my own window!

Mu Yun turned his head sharply and looked at the window.

At this moment, it was no longer pitch black outside the car window near his side.

Outside the window, it was as if someone had been glued with a huge piece of wallpaper outside.

With the help of the glimmer of light from the car window, Mu Yun saw countless grids painted on the wallpaper.

These oblong lattices are colourful and resemble both snake scales and bird feathers.

In the next second, Mu Yun could see more clearly, and his pupils instantly dilated-

Countless scales and feathers outside the window are shaking and opening and closing in unison.

Outside the car is not a wallpaper at all, but a living animal!

It's just that this creature is so big, even if you look through the car window, it's just like a leopard in a tube—

Mu Yun mistakenly thought it was a huge wallpaper, but in fact, it was just a part of the fur on its body!

Without Muyun to think too much, a sharp siren sounded in the carriage.

The overhead loudspeaker kept repeating a phrase in Chinese and English:

"Enemy attack! Enemy attack!"

“Enemy attack！Enemy attack！”