Boom! Boom! Boom!
Loud sounds resounded non stop as the entire sky of Cloud Cover Continent shook.
"This is the heavenly drum thunder tribulation!" Lang Ya land spirit said inside the ancient battle formation Heavenly Giant Solor.
His face was showing shock and confusion.
"With this heavenly drum thunder tribulation, every time thunder booms, formless astral lightning would form in the Gu Immortal's body, destroying their intestines and organs, the force can blow up mountains and crack boulders. This is a sound path and lightning path tribulation, normal Gu Immortals cannot defend against it easily, they are also sure to die in this tribulation. However, Fang Yuan, you do not need to fear, this place is surrounded with refinement path dao marks, it is the best defense. Furthermore, I have methods to resist it, as long as Heavenly Giant Solor is around, you will be safe!"