Simultaneous time travel: But our system is out of sync!

"What are you doing?"

"Stop right there!"

Seeing Lin Bei counting so leisurely,

One of the men surrounding Lin Bei felt uneasy for some reason and drew a black dagger from his waist, pointing it at Lin Bei.

However, Lin Bei ignored it and continued counting on his own.

"Four, five..."

When it came to this person, we had just counted to six.

"six"

However, when he was counted to six, he finally realized what Lin Bei was doing.

As he counted to six, he felt as if the heavens and earth suddenly became heavier, crowding towards him from all directions.

He was like a tiny insect encased in amber, unable to breathe or move.

Then, he completely lost consciousness amidst this pressure.

"Seven, eight, nine"

"Ten"

After counting down to the last ten, Lin Bei turned around and left.

The ten people who had just surrounded Lin Bei remained motionless, like statues.

They watched helplessly as Lin Bei left the encirclement and walked further and further away.

A flock of sparrows landed curiously on a nearby branch, chirping and discussing why these humans were standing there motionless.

Until a curious little sparrow landed on one of the people's heads and gently pecked at it.

The little sparrow's peck seemed to have disrupted some kind of balance.

"Thump..."

"Thump..."

"Thump..."

……

These ten people fell down one after another, like dominoes.

If someone were to open the heads of these ten people at this moment, they would find that the brains of each of them had been spun into a paste, as if they had been twisted with chopsticks.

Lin Bei, who had already walked some distance away, looked at the secluded and spacious place in front of him, a look of satisfaction in his eyes.

As for those ten people, Lin Bei didn't really care much about them.

The reason he tolerated them following him around was simply because he suddenly felt like using them for an experiment.

How powerful would his enhanced mental strength, combined with his aura, be to ordinary people?

Before his mental strength surged, momentum was merely a means for Lin Bei to assist in combat.

It is generally used to lock onto the enemy, disrupt the enemy's perception, and oppress the enemy's spirit.

Even when used on ordinary people, it would at most make them dizzy.

Now, with their mental strength surging, trying again, with the help of the momentum, directly turned their brains into mush.

It has transformed from an auxiliary means into a truly lethal one.

Even if his mental strength increases again in the future, Lin Bei could cause the brain death of an ordinary person with a single thought.

However, even now, as long as it is within the range of Lin Bei's mental strength and influence.

In a sense, Lin Bei is like a god who can decide life and death with a single word.

In his eyes, ordinary people are like ants, easily crushed.

However, Lin Bei did not become arrogant because of this and stopped eating beef.

Because his greatest enemy at present is still the demons led by Muzan.

Evil spirits are different from humans; brain death has no effect on them.

Unless Lin Bei can blow their heads off, but even then he still won't be able to kill them.

This can only restrict their activities, unless they can use their mental power to crush the evil spirits into dust.

However, Lin Bei didn't know how strong his mental power would have to become to achieve that level.

It belongs to the category of things that are desirable but unattainable.

Therefore, Lin Bei's most realistic way to kill demons right now is to rely on his Solar True Fire and join the Demon Slayer Corps to obtain a weapon made of gorilla-colored iron sand.

Crimson iron sand is a magical metal.

Extracted from hematite, it is a mineral that can absorb solar energy.

Therefore, the Nichirin Blade made from gorilla-red iron sand possesses the ability to kill demons.

Its basic logic is actually to use the sun's energy to kill evil spirits.

As for the Nichirin Blade that Urokodaki Sakonji prepared for him before he went down the mountain.

Even though Lin Bei had previously used a samurai sword to cut bullets in the underground base.

But he still wanted to complain.

Can a samurai sword really be considered a decent weapon?

It's neither a knife nor a sword.

It has neither the ferocity of a knife nor the agility of a sword.

It is a matter of taking the dross and discarding the essence.

And it's also easy to break.

It's only good for ordinary people to use in fighting.

It's rather impractical when fighting against something like evil spirits.

Compared to such flashy but impractical things, Lin Bei still prefers to use other weapons.

For example, he thinks heavy-duty brass knuckles are pretty good.

His punches landed with a satisfying, visceral impact, while also complementing his fiery fist technique perfectly.

At that point, one punch would take down a demon; wouldn't that be much more useful than a samurai sword?

But that's a story for later; I need to join the Demon Slayer Corps first.

Lin Bei's own breathing technique is still in the development stage, and Tanjiro has only just begun to learn breathing techniques from Urokodaki Sakonji.

There wasn't an opportunity for him to join the Demon Slayer Corps yet.

So Lin Bei put these things back to his mind for the time being, took out the whistle that Lady Rose had left him from his pocket, and put it in his mouth to blow.

"Buzzing..."

Lin Bei's ears didn't hear any sound, but his mind could feel a wave emanating from the whistle, spreading in all directions.

Lin Bei took off the whistle, looking surprised.

"What is this, infrasound?"

Can jays hear infrasound?

He thought of the knowledge he had learned from watching science channels in his previous life.

Sound is produced by vibration.

The range of human hearing is between 20 and 20000 hertz.

Anything above 20000 Hz is ultrasound.

Waves below 20 Hz are infrasound.

Some animals on Earth can hear infrasound.

The pigeon, elephant, and whale represent the air, land, and sea, respectively.

But I've never heard of crows being able to hear infrasound.

Perhaps it's because the harpy is special!

Lin Bei thought to himself, then blew the whistle again.

This time, he blew for ten minutes straight before he heard the sound of wings flapping.

"Sound of something rustling..."

Then a crow, entirely black except for a ring of rose-red feathers around its neck, landed on Lin Bei's shoulder.

Looking at the red-feathered crow in front of him, Lin Bei actually saw a hint of anthropomorphic dissatisfaction in the crow's eyes.

Lin Bei looked surprised.

"Is this a harlequin?"

He raised his hand to touch the red-feathered raven's head, but the raven nimbly dodged him.

And then he took the opportunity to peck Lin Bei's hand.

Her gaze shifted from dissatisfaction to disgust, as if she were facing a proud young lady being harassed by a greasy middle-aged man.

Seeing that a crow could convey such rich and vivid emotions with its eyes, Lin Bei was even more amazed.

Although he had long known that crows were very intelligent birds.

Some crows even exhibit a certain degree of sociality.

Crows that have lived with humans for a long time can understand some simple human language and can judge some human intentions through human body language.

But the crow perched on his shoulder had such lively eyes.

Lin Bei even felt that inside the skin of this red-feathered raven was the soul of a person.