Hello, is this a letter addressed to Demon Fortress?

Lin Gui manipulated his staff, carrying Elvia, and floated silently above Duke Joseph and Prince Charles.

Two jet-black ravens led the way.

Under the leadership of Duke Joseph.

They walked through several winding secret corridors and finally stopped in front of a seemingly ordinary stone wall.

"The treasure vault is located beneath the mansion?" Prince Charles asked, somewhat surprised.

The hiding place... was surprisingly ordinary.

"Hehe, Your Highness, please calm down."

Duke Joseph smiled, a hint of smugness on his face.

He stepped forward and began operating several extremely hidden magical mechanisms on the wall that could only be activated by him.

With a low, rumbling sound, the stone wall slowly slid open, revealing a deep, downward staircase behind it.

"You all stay outside and guard the area. No one is allowed to come in without my order."

The Duke dismissed all his guards and, with only Prince Charles by his side, ascended the hidden, downward-facing stone staircase.

Before activating the final mechanism, Duke Joseph stopped in his tracks.

Turning back to Charles, his tone carried an unprecedented solemnity:

"Charles, what I am about to show you is the greatest asset that has allowed my Joseph family to stand strong through a thousand years of trials and tribulations!"

After saying that, he suddenly pressed down on an inconspicuous stone button in his hand.

"boom……"

The entire stone staircase beneath my feet suddenly shuddered and began to descend steadily, like an elevator.

The process of descending the stone steps was longer than imagined.

There was no sign of improvement even after 10 minutes.

The surrounding walls gradually transformed from rough rock into some strange metal that shimmered with a faint silver light.

The passage was unusually quiet, with only the faint sound of the wind as the stone steps descended.

"This is... a starstone?"

Prince Charles recognized the material of the wall and couldn't help but gasp.

This indestructible mineral, capable of blocking energy detection, is priceless, with every gram worth its weight in gold.

Normally used only for forging Star-level weapons, but here... it's being used to pave a passageway?!

As the depth increased, the surrounding air began to warm up.

Prince Charles had a slight sheen of sweat on his forehead.

His head.

Elvia, lying on Lin Gui's back, also felt the unusual temperature and whispered.

"This depth... is outrageous, it's almost a kilometer deep."

After an unknown amount of time, the stone steps finally came to a slow stop.

Suddenly, everything became clear!

A vast underground space unfolded before them.

The dome of this space seemed to have no end.

Looking around, its width is enough to easily accommodate several Carter Palaces.

A person standing in it feels as insignificant as a speck of dust.

The first thing that catches the eye is the real "golden mountain" in the distance.

It is made up of countless gold coins.

It radiated a breathtaking golden light in the darkness, and its size was comparable to a small hill.

And around Jinshan.

There were countless boxes and cabinets that emitted various magical glows.

Clearly, it contains even more precious treasures.

Prince Charles was deeply shocked by the sight before him, despite being mentally prepared.

Elvia's brow furrowed slightly.

Her focus wasn't on the treasures, but on the space itself.

"This place... is too big, ridiculously big..."

A strange feeling welled up inside her.

"The Duke's mansion and the royal palace are both on the first floor. It would be impossible to carve out such a large space at such a depth without anyone knowing."

Her gaze was fixed on the huge, neatly arranged stone bricks on the cave wall.

It bears obvious signs of artificial chiseling.

Lin Gui wasn't very interested in the secrets here.

His gaze swept over the golden mountain and the surrounding magic chests.

He said calmly to Elvia behind him:

"Stop daydreaming, hurry up and get the money, we're short on time."

His gaze was fixed on the mountain of gold coins.

Those scattered piles of gold coins, not protected by special magic, are their best targets.

As for those treasures, they are protected by magic, and any movement will trigger an alarm.

The forest ghost can be dismantled, but they don't have the extra time.

While Duke Joseph was facing away from the gold mine.

As Lin Gui proudly introduced the various rare and exotic treasures to Prince Charles, he became interested.

He floated behind Jinshan, slightly raised his right hand, and silently activated the [Levitation Technique].

In an instant, a small stream of gold quietly separated from the bottom of the gold coin mountain.

It floated up silently, merging into the area enveloped by the [Night Veil].

The cold gold coins, like bees returning to their hive, hovered tightly around Elvia and the Forest Ghost, enveloping them.

Lin Gui stopped moving only when he felt he was about to reach the limit of how perfectly the [Night Veil] could conceal him.

He showed no hesitation, manipulating the staff.

We flew upwards along the deep, star-studded stone passage.

At this depth, if they were trapped here, Lin Gui and Elvia would only face certain death.

It's almost impossible to dig a hole through the wall tiles paved with Starstone.

……

Inside the vault, Duke Joseph finally led Prince Charles on a tour of his collection.

Finally, we arrived at the most visually striking and impactful golden mountain.

"Your Highness, please look," the Duke said, opening his arms wide with pride.

"The gold coins stored here, roughly estimated, exceed several billion! This is our true strength!"

Prince Charles looked at the golden hills, and his eyes couldn't help but show a burning desire.

However, Duke Joseph's smile suddenly froze.

He subconsciously rubbed his eyes and leaned closer.

It seems like it's gotten so much shorter since the last time I saw it?

Is it just my imagination?

He frowned, then chuckled.

It must be because I've been working too hard lately. I'm getting old, and my eyesight is failing.

In this absolutely safe treasure vault, could the gold coins really grow legs and run away on their own?

He shook his head, dismissing the absurd idea, and led the prince to the other side.

Near the cave wall, there were many weapon racks and equipment stands.

The display features magical equipment that emanates powerful energy.

There are even two semi-divine weapons on par with Zacian.

Prince Charles's gaze, however, was drawn to a mural on the wall.

Unlike other oil paintings that are carefully framed and hung.

This painting was created directly on the mottled, ancient starstone.

Bearing indescribable traces of time.

In the image, a queen wearing a crown of thorns and holding a scepter stands tall, her eyes resolute yet sorrowful.

Beside her, a warrior clad in tattered armor knelt on one knee and presented her with a broken longsword.

Behind them lay a burning city and endless darkness.

"Duke, this painting is..." Prince Charles asked curiously, pointing to the mural.

Duke Joseph's pupils contracted sharply, but he quickly masked it, clearing his throat and waving his hand dismissively.

"Oh, this... it's just some random doodle by one of the kids in the family."

"I've drawn some fairy tales about knights and princesses, which are not very elegant and I hope Your Highness will forgive me."

He naturally changed the subject.

Prince Charles's attention was drawn to another legendary suit of armor that shimmered with lightning.

Charles raised an eyebrow curiously; this was a Starstone...

What kind of child could carve murals out of such hard stone?

Is he a legend?