Chapter 921 - Chapter 483: Return to Treasure City (2)

Li Mu smiled and nodded, explaining, "Shopkeeper Wan overpraises me. This sword uses a Tier Seven Flame Spirit Crystal as the primary material, supplemented by other Tier Seven Fire Element Spirit Ores, and has been refined through countless trials, set with the Heaven-Burning Sword Array to achieve its completion. Now, its spiritual energy is beginning to show, its Dao essence is already rich. Though it's only a Middle Grade of Tier Seven Dao Artifact, given time to continue nurturing, it will surely upgrade a tier and become a true Fire Spiritual Treasure."