As he drew closer, Xu Changqing was astonished to discover that the Thunder Dragon Water-Repelling Boat was not heading toward the surface. Instead, it kept sinking, plunging ever deeper into the seabed.
At first sight of this, he assumed the flood dragon had dived back into the water, perhaps having found a place to rest.
Yet when he saw what lay before him, his eyes widened.
It was not a flood dragon at all, but a crystal.
It was an irregular, double-pointed crystal pillar.
It stood roughly thirty feet tall, its widest point measuring about twenty feet across.
It looked like two twisted purple bolts of lightning fused together at the middle. Its top was sharp as an awl, while its bottom was slightly blunt and ridged, its facets carved with dense, intricate patterns.
Around its middle was a circular groove containing nine fist-sized Thunder Crystals arranged in a ring. The crystal was translucent like purple glass, with a strand of flowing silver thread hidden within.
Xu Changqing raised a brow. "These intricate ancient runes again."
They were exactly the same as those around the well mouth at the bottom of the Flood Dragon Suppression Tower, clearly the work of the same person.
Judging from the density of the energy, it had not been set up here long ago. It was highly likely that it had only been placed here recently.
The energy fluctuated from time to time, as though transmitting something.
Xu Changqing estimated its approximate direction, then froze in astonishment. "Profound Heart City?"
It had two ends.
If one end was aimed at Profound Heart City—
Then what was at the other end?
Xu Changqing looked over instinctively, but the seabed was boundlessly deep. Apart from water demons and sea monsters, he found nothing at all.
Yet he