C687 The Nest of the Azure Dragon

Suddenly, Lee Mo heard a faint sound in the air.

Even with his keen hearing, the sound was almost imperceptible.

"What's coming?"

Ji Kui's hearing was evidently sharper.

"I'm not sure, but it must be the culprit behind the deaths of the giant beasts," Lee Mo whispered.

Both of them focused their gaze in the direction of the sound