C213 The Entrance Exam

Inside the cultivation tower, Lu Yu's eyes snapped open, radiating a fierce intensity. "A hundred million high-grade spirit stones spent, and I've only reached the sixth level of the Astral Transformation Realm. The amount of spirit energy required for future breakthroughs will be even more daunting," he mused, a slight frown creasing his brow.

His body, akin to an insatiable black hole