"Yuqing Sword Skill, First Move: Frost," consumed one era of Heavenly Marrow.
"Yuqing Sword Skill, Second Move: Sword Control with Thought," consumed five eras of Heavenly Marrow.
These were the levels Gu Wen had already reached, typically used only for defense and dealing with enemies far weaker than himself. The greatest limitation of the Sword Intent was its huge consumption, making it unsustainable as a regular tactic against enemies. The greatest advantage, however, was its difficulty to defend against.
With Gu Wen's current strength, he feared no armies and could cope even when deeply entrenched in heavy-armored troops. But when it came to killing efficiency, the Flame Spear was no match for Sword Intent, because heavy armor did offer some defense against spear energy.
A casual spear thrust could break through, but a thread of spear energy from the heart could hardly penetrate fine steel.
