Huang Longzi's dragon body vibrated; his dragon whiskers stood sharply as spears, and his aura was impressive. His spiritual pressure dispersed, and endless Huang Water was manifested out of thin air. Some of the prawn soldiers and crab generals were rolled into the Huang Water, and they were devoured completely with only minimum remnants left behind. It was a shocking sight.
This supernatural power was known as "Real Trial of Red Water". Back in ancient times, the God was angered and a massive amount of water befell to destroy everything. This was considered as the ultimate calamity, and in the legends of every clan, there were records about a devastating flood.
Because it came from above, hence it was unavoidable. At most, one could try to survive in secrecy by relying on instruments that could ward off calamities.