At the bottom of the basin, about five or six thousand meters below the ground level, it was empty all around and completely dark. Li Xianjun's expression instantly turned serious as she extinguished the fire stick in Robert Cain's hand and said in a deep voice, "Did you hear a sound just now?"
"...No!"
Robert Cain was momentarily taken aback.
He looked puzzled. As a strong Tribulation Crossing Realm Middle Stage practitioner, with power nearly approaching the Tribulation Crossing Realm Late Stage, his perception was certainly above that of Li Xianjun.
However, it was Li Xianjun who heard a sound that he could not hear, which left him feeling quite surprised.
"Are you being too sensitive? There's no sound here at all!"
Robert Cain looked at Li Xianjun with confusion and asked softly.
"No. There definitely is! It seems like... breathing."
