With the previous Demon Immortal's blood essence, he was very curious about what was causing this disturbance.
"Demon Immortal remains?"
The further he went, the stronger the shockwaves became; he needed to muster mana to withstand them before he could proceed further.
"Boom! Boom! Boom!"
It was like unconscious pulsations, or perhaps the heartbeat of a giant beast. However, unlike the shock fire rings from the Evil Dragon Fire Beast earlier, this disturbance had no reaction to Su Yu's approach.
In one breath, he broke through hundreds of loops; later, the impact strength required him to unleash the Wind-Fire Vajra Wheel to slash a dozen times before he could cut through. When Su Yu was about to beat the retreat drums, he finally saw the source of the continuous shockwaves ahead.
"Sss!"
