The East Sea Swirls was indeed terrifying. Despite standing afar, one could still feel the ferocious movements of the waves. When seen from above, one would find that the East Sea Swirls had no boundaries. One couldn't see the end at all. 

Eight Gods Island and East King Island were to the left and right of the East Sea Swirls. Both islands resembled two huge pieces of land. In the middle of these two pieces of land was the boundaryless sea. All the seawater seemed to be swirling in a frenzy around a common center, causing huge waves! 

Emperor Yan's Hall was probably hidden within the depths of these waves! 

While the swirls were rotating, they were also ejecting boundless spiritual qi. That spiritual qi seemed to have come from the depths of the sea, and Emperor Yan's Hall would most certainly be on it to absorb the majority of this spiritual qi. The remaining spiritual qi would then leak out towards the Four Islands of the East Sun and the surrounding hundreds of thousands of islands. 

There were also several small islands in the vicinity of the East Sea Swirls. The smaller ones could fit a bazaar, while the larger ones could probably fit 100,000 people. As the East Sea Swirls weren't always steady, those islands in the vicinity were largely occupied by ghostly cultivators. Only ghostly cultivators...