My classmates chose martial arts and fantasy, but I chose the prehistoric world.

After leaving the Wang clan, Lei Hong piloted the Lei Man ship forward, intending to first send Meng Chuan back to the Aurora Starfield.

On the bridge, Meng Chuan leaned back in his seat by the porthole, holding a glass of Lei Hong's treasured Lei Huo wine in his hand, gazing calmly at the Milky Way rushing past outside the window.

Lei Hong sat opposite him, holding a wine glass, hesitating several times before finally unable to suppress his curiosity.

"Fellow Daoist Meng Chuan..."

He put down his wine glass, rubbed his hands together, and carefully considered his words. "I have a question, but I'm not sure if I should ask it."

Meng Chuan glanced at him: "Hmm?"

"Um..." Lei Hong coughed lightly, "Are you... perhaps the biological son of a powerful emperor who lives in seclusion in the Aurora Starfield?"

Meng Chuan paused, his hand holding the wine glass still, and looked at the other person again as if he were looking at a fool.

Lei Hong felt a little uncomfortable under his gaze and quickly said, "I didn't mean to offend you! It's just... think about it, you're only at the late stage of Immortal Emperor cultivation, yet you can take out two treasures at the level of Great Dao Emperor Weapons and suppress a veteran Immortal Venerable like Dugu Zui..."

The more he spoke, the more reasonable his guess seemed. "With this background and this strength, I really don't believe you're from an ordinary background! So, I'm thinking you're most likely a descendant of some reclusive emperor left behind in the Aurora Starfield..."

Meng Chuan put down his wine glass and shook his head slightly. "My parents were just ordinary people two years ago. They only embarked on the path of cultivation with my help, and now they are only at the Earth Immortal level."

"My home planet is an ordinary, low-level civilization planet called Blue Star, located in the solar system."

"And the solar system is just one of countless star systems in the Milky Way..."

"As for the Milky Way, it is just a small star system on the edge of the Aurora Star System."

"You probably haven't even heard of the Milky Way."

Upon hearing this, Lei Hong nodded unconsciously.

Meng Chuan picked up his wine glass again, gazing at the starry sky outside the window, his gaze becoming somewhat distant.

After a long while, he finally spoke: "Eight hundred years ago, without any warning, a batch of mysterious stones fell from outer space onto Earth."

"We call it the 'Interdimensional Teleportation Stone'."

The people of Earth will eventually venture into space, and this information will eventually be made public, so there's no need to hide it.

Meng Chuan said calmly, "There are array diagrams on those stones. We just need to set up the arrays according to the diagrams to build interdimensional teleportation arrays."

"This formation can send pure-blooded Blue Star people aged sixteen to seventeen to countless worlds—the world of martial arts, the world of immortals, the world of immortals and demons, and even... the primordial world!"

Then, he briefly introduced the differences between the four worlds.

Lei Hong remained calm as Meng Chuan recounted the first three worlds.

But when he mentioned that he had returned from the primordial era, Lei Hong was clearly moved.

"Before I entered the primordial world, tens of thousands of people from Blue Star chose the primordial world over the past eight hundred years, and not a single one returned!"

"I am the first person to return alive from the prehistoric world."

"My sister was the second, but she was able to come back alive because of me."

"The primordial era..."

"That was...a different world!"

Meng Chuan's voice carried a complex emotion, "Pangu created the world, Hongjun merged with the Dao, the Lich King and the Demon King fought for supremacy, and the Sages stood side by side..."

"There, above the Great Luo Golden Immortal is the Quasi-Saint, and above the Quasi-Saint is the Saint."

"Those who stand before sages are all ants—this is an ironclad rule in the primordial world!"

Lei Hong listened intently and couldn't help but ask, "What realm in our universe does a sage correspond to?"

"It's hard to say."

Meng Chuan shook his head. "There are two types of saints in the primordial world. One type is the Heavenly Dao Saint, who is controlled by the Heavenly Dao. Although their strength far surpasses that of Quasi-Saints, in our universe, they are probably only close to Great Emperors... Even the weakest Great Emperor can defeat them!"

"Even the invincible Immortal Emperor is far inferior to them in strength!"

"The other type is the Great Dao Saint, who proves the Dao through the laws, is not bound by the Heavenly Dao, and has a strength far exceeding that of the Heavenly Dao Saint. That level of existence should be roughly equivalent to the Great Emperor of our universe."

Lei Hong nodded thoughtfully, then asked, "So, your strength comes from the primordial world?"

"Yes."

Meng Chuan nodded, "Before entering the Primordial World, I was just a mortal with no cultivation... After entering the Primordial World, I spent 75,000 years there, and returned having achieved the late stage of Quasi-Saint!"

"Late-stage Quasi-Saint, which is equivalent to the late-stage Immortal Emperor in this world."

"Of course, I spent 75,000 years in the primordial world, but only one year has passed in this world!"

Upon hearing this, Lei Hong's expression instantly changed, and he exclaimed in shock, "One...one year?! Fellow Daoist Meng Chuan, are you sure you're not mistaken?!"

In just one year, he went from an ordinary person to a late-stage Immortal Emperor?

And he's such a terrifying late-stage Immortal Emperor?

He simply couldn't imagine it!

"This is also the magic of the interdimensional teleportation stone."

Meng Chuan told Lei Hong about his "research" on the interdimensional teleportation stone, explaining that it was impervious to divine sense and could not be destroyed by brute force...

He even suspected that the interdimensional teleportation stone was one of the supreme imperial weapons that was shattered during the Great Emperor's War eight hundred years ago!

This is why he told Lei Hong all this; he needed someone to help him understand the specifics of that great emperor's battle.

"I hadn't realized it until you said it... Eight hundred years ago... The timeline matches up! Maybe it really was because of that battle that Earth entered the era of countless worlds!"

Lei Hong realized what was happening. He didn't believe such a coincidence could exist. "However, what I can't understand is... why did the interdimensional teleportation stone appear on Earth? And why can it only teleport pure-blooded Earthlings to the myriad worlds?"

"That's what I don't understand either."

Meng Chuan shook his head.

"Fellow Daoist Meng Chuan, can you... still return to the Primordial World? You just mentioned the limitations of the interdimensional teleportation stone, which means that every Earthling only has one chance in their lifetime to travel to the myriad worlds."

Lei Hong asked again.

A glint flashed in Meng Chuan's eyes. "That's a good question... If it were before, I would have told you—not necessarily!"

Lei Hong was taken aback: "What do you mean?"

Meng Chuan's eyes shone with an alarming intensity: "Now, I can confirm that besides the interdimensional teleportation stone on Blue Star, there must be other ways to travel between the Primordial World and this universe!"

"real?!"

Lei Hong's gaze instantly turned fervent!

If that's true, wouldn't it mean that he also has the opportunity to go to that magical prehistoric world?

Meng Chuan nodded: "The Tianyan Star Domain Lord, the top-grade innate imperial weapon you used to save Dugu Zui earlier, that willow branch..."

"Its original owner was Yang Mei Daoist, an extremely ancient and top-tier powerhouse in the primordial world, the reincarnation of the Space Demon God among the three thousand Chaos Demon Gods!"

"That magical treasure was his companion magical treasure, named 'Hollow Willow Branch'."

Upon hearing this, Lei Hong's pupils suddenly contracted!

"You mean... that domain lord went to the primordial world?"