Thousand-Year Cold Iron, a special metal that becomes extraordinarily hard after being infused with Primordial Qi and can convert Martial Arts True Qi into ultra-low-temperature cold Qi.
This metal is only produced within Grotto Heavens. The longer it is infused with Primordial Qi, the higher its quality becomes. Thousand-Year Cold Iron is already considered an Upper Grade Treasure.
Nine Heavens Profound Iron, a special alloy mainly originating from beyond the heavens, formed in a high vacuum and zero-gravity environment, thus possessing high temperature resistance, high strength, high toughness, and corrosion resistance. It is an excellent material for Artifact Refining.
True Gold, the finest true Qi transmission conductor.
Purple Gold, the finest Thought Ability transmission conductor.
These two metals are crafted by Qi Refiners of the Profound Sect using the Artifact Refining Secret Technique. Their yield is extremely low, and their prices are exorbitant.
