Only when competing against a grandmaster of the sword would one truly be able to see one's own weaknesses.
Although Ji Ning's 'Sword Realm' was very formidable, allowing him to perfectly control every single sword-strike he used, its weakness was that it was too balanced. His sword wasn't fast enough, unpredictable enough, savage enough…it was lacking in many respects. When World God Blackmist used his sword-arts against Ning, Ning was completely suppressed in every respect. Blackmist's sword-arts were truly terrifying and contained an entire system within it.
The Sword World level represented a systemized understanding of the true essence of the sword, allowing one to form an entire world with it. World God Blackmist clearly had already reached that level.
Slash.
Swish.
"That's how it should be."
"The second stance of the [Nameless] sword-art…no wonder I always felt something was off."
"Right…"
