Mysterious Crystal Wall.
Viewed from high above, one would see a chaotic-colored crystal wall encasing this entire stretch of heaven and earth, like an egg.
This crystal wall had blocked who knew how many Void Returning Cultivators, and it had also kept cultivators from ever truly entering the core region of this secret realm.
Because of this, the cultivators of Xiankong Island had gradually forgotten this place.
They had even named it the "Seven Treasures Secret Realm" rather than the "Mysterious Crystal Secret Realm."
Yet at this moment, three cultivators of different races had arrived outside the Mysterious Crystal Wall.
One had silver wings and a single horn, with a layer of silver-white radiance swirling around his body. Another was a short, plump girl with purple markings on her face.
The last was a Human Race Cultivator, with an ordinary appearance and a gloomy air between his brows.
"This is the famous Mysterious Crystal Wall?"
The Human Race Cultivator Xia gazed at the chaotic, crystal-clear wall ahead, admiration surfacing on his face.
"Hehe, Fellow Daoist Xia, if you don't believe me, you can give it a try... It's said that only Seventh-grade Means can leave a mark on this Mysterious Crystal Wall."
The purple-clad girl said with a giggle.
As she spoke, a purple crystal hairpin suddenly appeared in her hand.
The purple hairpin made a light slash. Purple lightning and fire appeared in the void, immediately leaving a mark a foot deep on the purple wall.
"Seventh-grade Means."
The silver-winged, single-horned alien's face showed a trace of wariness, followed by a cold laugh. "It's useless. Although Seventh-grade Means can leave marks on it, the Mysterious Crystal Wall is far thicker than we expected... Not to mention..."
The Human Race Cultivator Xia stared at the foot-deep mark and discovered that