One Piece: The user of the Nen-Nen Fruit, who overturned the sea.

The stone gate slowly opened inward.

The sound was deep and resonant, like a giant beast that had been asleep for millions of years finally opening its eyes.

A musty stench, carrying the smell of metal and rock, wafted out from under the door.

The passage was deep and dark, with no end in sight.

"Let's go." Roy took the lead and stepped into the passage.

As Roy and the others entered, the lighting system in the passageway automatically activated.

A cold, blue-white light shone from the walls on both sides, row after row, stretching forward until it disappeared into the distance.

The walls on both sides of the passage are covered with murals.

"Wait a minute."

Olvia's voice came from behind; she had already set up the recording equipment.

"These murals... are too important; they must all be recorded."

Roy nodded and slowed down to give the scientists time to film and translate.

The first mural depicts the golden age of lunar civilization.

Towering buildings, flying aircraft shuttling back and forth, and people living in peace and contentment.

The lunar people in the picture look almost exactly like humans, except that they are shorter and have whiter skin.

They possessed technology far beyond their time—energy shields, light-speed travel, and even the ability to control the weather.

But behind the prosperity, a shadow is descending.

The second section of the mural depicts a resource depletion.

The screen turned gray.

The mineral veins are depleted, the land is barren, and the air is thin.

The once bustling city has become desolate, and people have begun to quarrel and divide.

Some people advocated staying, believing that the moon could still be saved; others wanted to find a new home and turned their attention to the blue planet below.

"Qinghai".

Olvia translated the accompanying text annotations.

"They call that blue planet 'Qinghai'."

The third section of the mural, the renovation plan.

The scene changed. A group of people were sitting together, having a heated discussion.

The drawing in front of them depicted a strange humanoid figure—taller than ordinary moon people, with huge wings on its back and flames surrounding it.

"In order to adapt to the environment in Qinghai, they decided to use technology to modify their bodies."

Olvia's voice trembled slightly.

"They want to transform a portion of the moon people into 'perfect warriors' capable of surviving in any environment."

The renovation process was described in detail.

Gene editing—implantation of a "flame core"—bones strengthening, wings growing—skin cell modification to adapt to various environments—implantation of an artificial "sunlight" on the back, never to be extinguished.

Each process has a detailed illustration, and each step has dense text annotations.

The image was cold and precise, like a surgical instruction manual.

"A race of gods."

Olvia translated the title on the mural.

Those who were modified were called the "Gods".

In the image, a cyborg stands on a high place, with his people kneeling behind him.

He has white hair, brown skin, huge black wings, and an ever-burning flame on his back.

Everyone turned to look at Jhin at the same time.

Jin didn't speak, but stared at the cyborg in the mural, his eyes filled with a complex and indescribable light.

Roy patted him on the shoulder without saying anything.

The fourth mural depicts the Age of Exploration.

After completing their modifications, the lunar people began preparing to conquer Qinghai.

More "Gods" were being manufactured, spaceships were being rolled out one after another, armies were being trained, and weapons were being stockpiled.

"They didn't go there to flee," Roy murmured. "They went there to conquer."

Olvia nodded, pointing to the text annotations on the mural:

"It says here... 'Qinghai is a new home given to us by the gods. We must use our strength to protect it and rule it.'"

The mural continues.

The turning point comes in the fifth picture.

The leader of the cyborgs stood in the center of the council hall, in front of a huge weapon design blueprint.

Those around him looked shocked; some objected, some supported, and some were afraid.

"Military strength alone is not enough." Roy understood the meaning of the mural. "They need absolute power."

The following scenes depict the manufacturing process of that weapon.

Countless tiny people built a massive weapon platform inside the moon—a ring-shaped energy collector, a huge launch port, and a complex control system.

Every step of the process consumed enormous human and material resources; the entire lunar civilization was at work to develop this weapon.

The murals are marked with the weapon codes.

The moment Olvia translated those two words, the entire room fell silent.

"Heavenly King".

Roy's pupils contracted sharply.

Heavenly King.

The king of ancient weapons.

It was actually created by people on the moon?!

The following footage confirmed his guess.

On the mural, the leader presses the start button.

Energy is extracted from the moon's core, gathered in a ring-shaped concentrator, compressed, and compressed again until it forms a beam of energy several kilometers in diameter.

A beam of light shot out from the moon and struck an island on the blue planet below.

The island vanished instantly.

Towering waves rose from the sea, and the shockwaves spread to the horizon.

The inscription on the mural consists of only one sentence: "Test launch successful. Target island, along with all life on it, has been completely wiped out."

Roy took a deep breath and forced himself to calm down.

This is the ancient weapon "Tianwang"—a space-based weapon built on the moon by the lunar people to conquer Qinghai.

A deeper question arose in my mind:

What about Neptune and Pluto? Were they also man-made on the moon?

Or was it created later to counterbalance the "Heavenly King"?

The most crucial question is—how did Im gain control of the "King"?

What exactly happened 800 years ago?

Roy faced everyone with a solemn expression.

"Everything I see here today—the origin of Lunaria, the existence of the Heavenly King, the plans of the Moon People—is all buried deep inside."

His voice wasn't loud, but every word was like a nail driven into everyone's mind.

"Anyone who dares to tell anyone, I'll kill him with my own hands."

No one spoke, but everyone knew how big a storm this would cause if it were leaked.

"Keep going," Roy said. "We're not at the end yet."

He specifically asked Jin to follow him, while the rest of the group stayed in the mural hall to continue their research.

The two walked deeper into the passage, with the excited discussions of scientists behind them.

At the end of the passage, a faint light shone through.

There was also a humming sound of some kind of machinery operating.

Roy and Jhin exchanged a glance and took a step at the same time.

At the end of the passage is a huge hemispherical plaza.

Roy stood at the entrance, staring at the scene before him, stunned for a full three seconds.

The plaza's dome is hundreds of meters high and over two kilometers in diameter, making it ridiculously large.

But what truly stunned him was not the size of the square.

Instead, in the square, thousands of mechanical warriors were neatly arranged, forming one square formation after another.

Each mech warrior is three meters tall, painted in silver-white, with a blue core on its chest that shimmers faintly in the darkness.

The formation stretched from our feet to the horizon, row upon row, column upon column, densely packed, numbering in the tens of thousands.

Unlike the broken machine outside, these mechanical warriors were intact, with no rust on their surfaces, and even traces of lubricant could be seen at their joints.

They simply stood there quietly, their eyes dull and their cores dark, in a deep state of hibernation.

"This..." Jin's voice was a little dry, "How much is this?"

Roy's telekinetic powers swept across the entire plaza, and numbers appeared in his mind.