Black Crystal Wall.
If one were to look down from the high skies, they would see a layer of chaotic colored crystal wall that enveloped the entire world, indistinct like an egg.
This barrier had prevented countless Returning to Emptiness cultivators, keeping the core area of this Secret Realm untouched by cultivators.
For this reason, the cultivators of Falling Sky Island had gradually forgotten this place.
They even named it the 'Seven Treasures Secret Realm,' rather than the 'Black Crystal Secret Realm.'
However, at this moment, at the outer edges of the Black Crystal Wall, three cultivators from different races had arrived.
One of them was a Silver-winged Unicorn Clan member, his body wrapped in silver-white radiance, while the other was a short, plump girl with purple patterns on her face.
The last one was a human cultivator with an ordinary appearance and a hint of gloom between his brows.
"Is this the famous Black Crystal Wall?"
