When he saw the Emperor of the Dead used his Protective Boundary of the Netherworld Sea, Xiao Yan could not help but laugh.
This was a spell that the Emperor of the Dead made in imitation of the power of the Netherworld Sea. While the Netherworld Sea was unstable and would occasionally open, it could contain thousands of calamities and stop them from entering the Greater World. Its defensive powers were evident. Using this power to form the Protective Boundary of the Netherworld Sea was an extremely powerful defensive spell.
In terms of pure defenses, this ranked first among all human cultivators in the Divine Lands.
However, Xiao Yan's understanding of the Netherworld Sea surpassed that of the Emperor of the Dead. Also, as the Celestial Sect of Wonders had caught some people who cultivated the Emperor of the Dead Mantra, they too knew about its powers.
