Bai Xiaotian emerged from the stone dwelling of the Mirror Demon nearby. Noticing Shen Luo's actions, he immediately came over.
He soon noticed the unusual spiritual energy here as well. Unfortunately, he had no sharp tool at hand, so he could only assist Shen Luo by carrying the chipped stone blocks outside.
Relying on the incomparable sharpness of the Demon-Slaying Sword, Shen Luo quickly excavated a passage more than ten zhang deep into the stone wall.
The deeper he went into the wall, the denser the spiritual energy seeping out from within became. Shen Luo suddenly understood why the heaven and earth spiritual energy in this underwater cavern was so abundant.
At this depth, the rock ahead became increasingly hard. Fortunately, he had the Demon-Slaying Sword; otherwise, it would have been impossible to proceed any farther.
Shen Luo swung his sword with all his strength, smashing through the rock as he advanced several more zhang. Then, the stone ahead suddenly vanished, and a white curtain of light appeared before him with extreme abruptness.
"Eh, what is this?" Shen Luo widened his eyes.
Worm-like runes flickered across the curtain of light, appearing exceptionally profound. There seemed to be another Cave Heaven beyond it, yet no matter how hard he strained his vision, he could not see the slightest thing through it.
"It seems the spiritual energy in this underwater cavern is coming from behind this light curtain. What kind of place is inside? Could it be some secret realm?" Shen Luo's gaze roamed over the white curtain as thoughts raced through his mind.
"This aura? The place behind this light curtain is no trivial matter! Fellow Daoist Shen, let me try using the Essence-Devouring Gu." Within the Heavenly Register Space, Yuan Qiu had also sensed the aura of the white light