Sea heart sand is born at the deepest part of the deep sea. It can purify the Impurities contained within Immortal Artifacts, greatly enhancing the Immortal Artifact's potential for advancement.
As long as sea heart sand is refined into an Immortal Artifact, it can immediately advance. As for how much it can advance, it still depends on the cooperation of other materials.
Fang Hong now possesses two precious artifact refining materials: the purple gold fruit tree and thunder crystal.
If he could also acquire these one hundred catties of sea heart sand, and combine the three in a reasonable way, refining them into the seventy-two nirvana divine thunder swords, it would undoubtedly cause the Divine Thunder Swords' power to undergo a qualitative leap, once again revealing their former sharpness.
The artifact refining competition was still two days away.
