C258 Guu Tianyang's Special Training(1)

"This is..."

Sunn Ruotong fluttered a slip of paper between her lips, and the returning ultrasonic waves painted a picture of the room for her, despite her blindness.

Guu Tianyang acknowledged, "Your hearing is exceptional, and now you've mastered the use of ultrasonics. You may not have sight, but you perceive more than those with normal vision. However..."

His tone shifted