章 878: Sword Heart, the Fifth Level

The palace of Yin Thunder, located in the north of Star Island, was almost uninhabited.

When Jian Wushuang took the token and came here, he was amazed at what he saw.

It was far from a palace. Instead, it was more of a vast Thunder Sea.

At the sight of this, he saw the whole palace inside was crowded with black Thunderbolts. It was a Thunder Sea, a dark Thunder Sea.

Each of those black Thunderbolts in the Thunder Sea was astonishingly horrible and powerful.

"Good boy! How could it possible for me to go into the Thunder Sea and produce my first Divine Yin Thunder by being devoured by numerous Thunderbolts and absorbing the power of them?" Staring at the Thunder Sea, Jian Wushuang felt a bit breathless.

The technique of cultivating Divine Yin Thunder was very wild, but people still stood a good chance of acquiring it.

"Whoosh—"

"Okay, go!"

Jian Wushuang breathed out softly as he hovered into the dark Thunder Sea.