Heaven's Gate World, Unknown Reward

After listening to Profound Origin Immortal Emperor's account.

Su Changge could not help but draw in a sharp breath.

He truly had not expected the Immortal Domain to conceal such a secret realm.

What crisis had the Primordial Thirteen Emperors encountered back then?

Why had five of them fallen into eternal slumber within the Primordial Emperor Realm?

And where had the other eight gone?

Were they still alive in the Immortal Domain?

What left him most baffled was that the Immortal Domain had far too few records concerning the Primordial Thirteen Emperors—so few that even the Immortal Domain Ancient Texts contained no record of them.

But why did his Uncle know of this secret?

He could even recount it with such clarity, as though one of the Primordial Thirteen Emperors had personally told him!

"Cough, cough."

Seeing Su Changge fall silent in thought, while occasionally casting him suspicious glances, Profound Origin Immortal Emperor cleared his throat and continued, "However, our Huang Ji Immortal Domain does possess a Primordial Secret Realm with some connection to the Primordial Thirteen Emperors."

As Su Changge's biological uncle, Profound Origin Immortal Emperor understood Su Changge's temperament rather well.

The boy was shrewd as hell. Give him a vine, and he would follow it to the melon patch, digging until he stripped you bare of even your underwear!

He even somewhat regretted telling him the story of the Primordial Thirteen Emperors.

After all, the Primordial Thirteen Emperors truly did have a slight connection to the Taboo Su Family.

But there were too many secrets involved. To be safe, he still could not tell Su Changge.

At those words, Su Changge abruptly snapped out of his countless thoughts.

"A Primordial Secret Realm connected to the Primordial Thirteen Emperors?"

Primordial Secret Realms were ancient secret realms that had