"Fiery Sun Divine Iron" is a top-grade fire attribute spiritual object and also the highest-grade material that can be bought with Spirit Stones. Higher-grade fire attribute spiritual objects cannot be purchased with Spirit Stones.
Among the four lifebound spiritual artifacts Zhouyang intended to refine, "Fiery Sun Divine Iron" is one of the substitute materials for refining the "Qianyang Golden Lamp", serving as an alternative to the hard-to-find "True Sun Gold".
The previous conversation with Master Cyan Yang had already made Zhouyang realize that if he were to choose inferior materials to refine his lifebound spiritual artifact, opting for refining the "Qianyang Golden Lamp" and "Qianyang Golden Tower" was the most feasible choice.
