Chapter 691 Earth Fire Calcination_2

In such a situation, it was actually no problem to attempt the refinement of the Earth Vein Spirit Pearl using the Earth Fire Array.

Therefore, even though the huge artifacts refining furnace contained blocks of spirit mines with solid material that showed no signs of melting.

He Song wasn't worried at all.

Refining a Life-Critical Treasure was not an easy task.

These solid spirit mines could not possibly melt in an extremely short period.

Perhaps, to fully melt these spirit mines would also take He Song quite some time.

This time,

might be several years.

It could also be ten or twenty years, or even longer.

He Song was very clear about this in his heart.

After all, it had taken He Song almost ten years to fully comprehend the array outside Master Xuan Ying's cave mansion.

And when He Song entered the Master Xuan Ying's Cave Mansion,