Bai Wu looked around and began to use the method of directional locking of Prayle's Eye.
If you stare into the darkness, these eyes won't give any answer, which also means... if you go blind, or experience temporary blindness, the ability cannot be used.
But as long as the eyesight remains, even if you gaze into the void or at obstacles, the notes sometimes give some information.
However, how to analyze the truly useful parts from this information is up to the eye's owner's skill.
Bai Wu looked to the north.
To the north lay the prairies where the herbivorous animals lived.