In the starry sky, a Space Vortex suddenly appeared.
The vortex split open soundlessly in the void, and from its depths, a figure flew out, hovering steadily amid the starry sky.
It was Lu Qing.
The green robe on him snapped in the starry sky, yet it bore not the slightest trace of Space Turbulence.
The stone tablet hovering before him spun once, then fell back into his hand.
Then, with a light wave of his hand, a beam of light flew out from the Li Fire Cauldron, and the figures of Xiao Yan and Xiao Li appeared beside him.
"Brother, what exactly is that senior's background?" Xiao Yan asked curiously as soon as she came out.
During the few days she had stayed in the secret realm, she had heard many stories from the ancient era, but she had never been able to see through that Mysterious Existence's true identity.
They were like a lonely old person keeping watch in the secret realm, knowing many secrets, yet trapped within that space, unable to leave.
Lu Qing let out a soft sigh. "Most likely... a guardian who held fast to their post."
In truth, he already knew the origins of the Mysterious Existence.
Back then, when he had only been at the Nascent Soul Realm, looking at that senior had been like gazing at flowers through fog; everything had been indistinct. He had only felt that an unfathomable power was hidden within that gray silhouette.
But after stepping into the Integration Realm and returning to the secret realm, he had seen a few clues.
If his guess was not wrong, that senior should be the Artifact Spirit of the Trial Witch Tower in the secret realm.
The Trial Witch Tower that towered at the very center of the secret realm