Moreover, once the formation was activated, there were only two ways to break it.
The first was to simultaneously break through the formation gates in all four directions.
The second was to use absolute power to forcibly break the formation.
No matter which method was chosen, breaking the formation would not be easy!
Furthermore, it depended on the cultivator's realm and whether they had fully refined the Four Immortal Slaying Swords and the Immortal Slaying Formation Diagram.
With Luohu's current cultivation realm, he could naturally fully refine the Immortal Slaying Formation Diagram.
The Four Immortal Slaying Swords had been personally forged by Luohu, so he could naturally refine them completely as well.
Therefore, Luohu could absolutely unleash the full power of the Immortal Slaying Sword Formation!
Thus, if one chose the first method to break the formation, four powerful experts whose cultivation realms were no weaker than Luohu's would need to enter it simultaneously!
Leaving aside whether such experts could even be found, even if they were, breaking the formation would not be so simple!
The Immortal Slaying Sword Formation's killing power was truly terrifying. Once inside, one needed at least a Top-grade Innate Spiritual Treasure for protection, or else one could be completely obliterated in mere moments!
Moreover, even a Top-grade Innate Spiritual Treasure could easily have its defenses broken by the Immortal Slaying Sword Formation if it was not primarily defensive in nature.
In short, breaking the formation was by no means easy!
As for directly using absolute power to forcibly break the formation, how great would that power need to be?
A Primordial Grand Unity Golden Immortal?
Luohu merely smiled without saying a word.
If his enemy were a Primordial Grand Unity Golden Immortal, Luohu felt there would be no need to fight at all, nor any