Freezing the ice surface with Ultimate Ice would be more effective, but since the goal was to establish authority, naturally such a cliché method wouldn't do.
Standing directly on the water's surface was something only Soul Masters above the Seven-Ring level who possessed the ability to fly could accomplish. Yet, to truly win the admiration of these Inner Court powerhouses, one had to achieve what ordinary people could not; otherwise, why should anyone yield to you?
"Hm?"
Chapter 563