Li Yao's eyes widened, the surprise was too abrupt and beyond expectation. He didn't anticipate discovering an Arrow of Mystery here and though this skill didn't increase any damage, when used properly it was truly divine.
Moreover, this skill was a variant of the Flare, one must learn this skill and then become unable to learn the Flare.
However, Li Yao didn't hesitate at all, he went ahead and learned the skill right away.
Of course, for ordinary players, the Arrow Mystery · Sound was too advanced, certainly not as useful as the Flare.
Fire a Flare into an area and it would illuminate it, revealing all various stealth professions.
But the Arrow Mystery wasn't that simple and barbaric...
Arrow Mystery · Sound
Mystery change · Scout, releases a sonar arrow that can detect the situation within a certain range, and transfers the information into the brain.