C858 Refining the Nine Heavens Stellar Sword

The Immortal divine material was a type of divine material that was exclusive to Saint of Extreme Dao. It was rare in the world, and after searching everywhere, they could not find it.

At the time of Ancient Times, not every single Saint of Extreme Dao was capable of refining their own Holy Artifact of Extreme Dao, because an immortal divine material was simply too difficult to find