Ye Xiaoyao gave a slight smile. "Master Xiao certainly calculates well!"
"Although you replaced the Molten Abyss Flame Iron with Profound Fire Mysterious Copper, you paired the sword's completion with an intricate array, allowing the potential of the Profound Fire Mysterious Copper to be fully unleashed!"
"As a result, within ten days, the might erupted by this immortal sword will undoubtedly be no weaker than one forged from Molten Abyss Flame Iron."
Chapter 518