C35 Iron Hammer Zombie

Black Iron Ore: Variant rocks that absorb spiritual energy from heaven and earth can be used for building, smelting weapons, armor. Increases the attributes of weapons and equipment.

Seeing this information, Gu Yi was a little confused. He could make weapons and armor, but how could he use it for building? Could it be that Qian Baiwan knew the use of this ore?

Thinking of this