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The sword soul of the Bright Moon Saber had always been increasing slowly, and as more Evil Sect demons were slain, it grew stronger.
But after reaching a certain point, it no longer increased, stagnating and hitting a bottleneck.
He didn't panic, merely continuing to slay Evil Sect demons.
Building up strength for a breakthrough, there might be a flash of insight, leading to a natural breakthrough.
Now, it had finally been triggered.
The sword light of the Spirit Butterfly Sword Formation became one with the whole, reaching a special state akin to resonance.
Under this resonance, a special rhythm was formed.
This rhythm invoked a mystical Void power.
This Void power didn't come from beyond, but was a power inherent in the world itself.
Like various kinds of waves.
People couldn't see it nor utilize it.
But in this special state, within this rhythm, this Void power was drawn in.