Hello, is this a letter addressed to Demon Fortress?

Under the cover of night, Lin Gui once again took control of the train and set off.

This time, his movements were even more composed and skillful.

Around 5 a.m., the sound of waves crashing on the shore could already be faintly heard in the air.

As dawn broke, the trackless train had already passed through the last forest.

Suddenly, a vast coastline unfolded before them.

This coastline, known as the "Reef Sea," presents a unique and treacherous ecological environment.

In the shallow waters, you can see hordes of crab monsters.

Their shells were an ominous dark red, and their enormous pincers gleamed coldly in the morning light.

These devil crabs are foraging in the shallows, occasionally fighting each other for a piece of rotten flesh.

Various strange shellfish demons are attached to the rocks along the coast.

Their shells have strange patterns, and a crack appears from time to time.

It revealed its sharp teeth.

Shea was the first to jump off the train, eagerly taking off her boots.

She walked barefoot on the soft sand, her silver hair fluttering in the morning breeze.

"This is the ocean..."

Curious, she squatted down and dipped her finger in the seawater.

I licked it carefully.

"Ugh! It's so salty!"

She immediately vomited, her face contorted in pain.

Eve also took off her shoes and socks and stood barefoot on the beach.

Seeing Xia's embarrassed state, she couldn't help but cover her mouth and chuckle.

Her short, ginkgo-colored hair swayed slightly with her movements.

Lin Gui stood behind them, lost in thought.

It's unclear when exactly, but Eve and Shea's relationship...

They seem to be much closer than they were to Elvia back then.

The North Wind Caravan decided to rest here for a while.

Betty, however, seemed quite frustrated for some reason.

She sat dejectedly on a rock.

He gazed melancholically at the calm sea.

Lin Gui frowned.

He looked around at the sky above the sea.

Only a few scattered demons flew in the sky.

The demons beneath the sea have never been interested in things in the air.

Not to mention trains flying over the sea.

Within the field of vision, apart from a few towering reefs.

There are almost no obstacles.

According to the golden roadmap provided by scholars.

The route is also quite straight.

Lin Gui couldn't figure out why Betty was so resistant.

Just as he was pondering this.

The members of the North Wind Caravan arrived at the bottom of the train.

They were operating a certain mechanism with practiced ease.

Soon, wide iron bars and wings extended from both sides of the train.

These wings are engraved with intricate magical patterns.

Lin Gui: "???"

He curiously leaned closer.

The train had completely changed its shape.

The wings that spread out on both sides make the whole train look like a giant iron bird.

The surface of the wings is covered with a special magical coating.

It glows with a faint blue light in the morning light.

"This is……?"

Lin Gui couldn't help but ask.

The scholar who was recording data nearby heard the question.

He looked up and adjusted his glasses:

"These are wings that were specially modified by dwarves."

"It can greatly stabilize the train."

Lin Gui was still puzzled:

"Betty's unstable train handling is mostly due to the complex mountainous terrain."

"It requires frequent obstacle avoidance."

"On such a flat sea surface, there shouldn't be any need for this kind of device, right?"

The scholar smiled mysteriously.

A meaningful glint flashed in his eyes:

You'll find out why in a bit.

He kept everyone in suspense and continued recording data with his head down.

Betty looked at the unfolding wings.

His expression grew even more bitter.

Four hours later.

After resting, under Freya's direction, everyone returned to their respective carriages.

Betty, however, looked as if she were going to a funeral, dejectedly walking with the scholar toward the front carriage of the train.

Seeing this, Lin Gui was even more puzzled.

The reason he chose to operate the train from the roof rather than from the front carriage was because the windows there severely obstructed his view.

Filled with questions, Lin Gui returned to his carriage.

Inside the carriage, two girls who had just been playing on the beach were sitting by a wooden crate.

They rolled up their trouser legs, revealing their fair and slender feet, and splashed seawater on each other to wash away the sand.

Shia's ankles were delicate and graceful, with the instep forming a beautiful arc.

Eve's feet were so white they were almost transparent, with bluish veins faintly visible beneath her thin skin.

Water droplets dripped down their smooth ankles, spreading into dark stains on the carriage floor.

"The seawater is so cool and refreshing!"

As she laughed, Shia playfully touched the water's surface with her toes.

The splashing water wet Eve's skirt.

Eve wasn't annoyed; she just smiled gently.

She reached out and gently brushed away the water droplets from her skirt.

As soon as Lin Gui closed the back door, he heard the train making a creaking mechanical sound.

He looked ahead and saw that the tandem carriages, which had originally had gaps in the middle to allow for flexible rotation, were now tightly connected under the power of magic.

All the carriages were firmly fixed together, forming a complete unit.

Even more astonishing is that the large wings on the sides of the train are slowly unfolding.

The magical patterns engraved on the metal wing surface lit up one by one.

It glows with a faint blue light in the morning light.

When these wings are fully deployed, the entire train looks like a giant steel bird poised to take flight.

Lin Gui watched all this, his doubts growing ever deeper.

Just as Lin Gui was wondering, an elegant figure suddenly appeared outside the back door window.

It's Freya.

Lin Gui thought she had something to do and was about to reach out to open the car door.

Freya smiled and shook her head:

"No need to open the door."

She looked through the car window at the three people inside, her tone gentle yet tinged with seriousness:

"The train may be going very fast later."

"Remember to tie yourselves tighter."

After saying that, she lightly pressed one hand against the outer wall of the train and opened the magic book with the other.

He began to chant ancient incantations in a low voice.

When Lin Gui heard Freya's first syllable, all his doubts were instantly resolved.

That was legendary-level wind magic.

The incantation for [Hurricane Propulsion]!

Freya plans to use legendary wind magic to accelerate the train?!

The wing wasn't modified for Betty at all, it was modified for Freya!

Lin Gui suddenly rushed towards the wooden box and pulled out the prepared rope.

"Quickly! Sit down!"

He called out urgently to the two girls.

Shea and Eve immediately realized the seriousness of the situation and quickly sat down with their backs against the carriage wall.

Lin Gui's movements were incredibly fast.

He first wrapped the rope around Shia's waist twice and tied a secure sailor's knot.

Then the other end of the rope is looped around the support column in the center of the carriage.

Next, tie the same knot on Eve.

Finally, he wrapped the rope tightly around his waist and gripped both ends of the rope tightly with both hands.

The whole process took only ten seconds.

Just as Lin Gui finished all this, Freya's chanting reached its climax.

An exquisitely crafted magical ring, about one meter in diameter, appeared on the train's rear door.

The train was locked completely.

And another giant magic ring, almost four times the size of a train.

It slowly unfolded behind the train, covering a large part of the sky.

When Freya uttered the last syllable.

"boom!!!"

The airflow that erupted from the giant magic ring was not ordinary.

Instead, it was a devastating storm!

The strong airflow instantly swept up all the sand and stones on the beach.

The seawater was forcefully pushed open, creating a deep trench.

The demon crab in the distance fled in panic.

The entire train seemed to be violently pushed forward by an invisible giant hand.

"what!"

Shea screamed as she was slammed against the carriage wall by the immense inertia.

Eve closed her eyes tightly, her fingers gripping the rope around her waist.

Lin Gui gritted his teeth, feeling an unprecedented acceleration.

Legendary magic blew a large crater in the beach.

The train, propelled by a tremendous thrust, shot off like a rocket.

Whether it was his imagination or not, Lin Gui faintly heard Betty's screams amidst the howling wind.