The Windswept Realm had nine regions, which were occupied by the Nine Nations. All of them together formed a huge ring shape.
In the center of the ring created by the Nine Nations was... the temple!
Between each of the nations was a massive windstorm that stretched from the sky down to the land, keeping all of the Nine Nations separated, and making passage between them very difficult.
Because of the windstorm barrier, the Nine Nations were essentially sealed. Only the Cauldron Seeking cultivators could pierce through, and even then, it required a steep price.
The barriers acted like a protection, allowing the Nine Nations to slowly grow and become more powerful.
But now that the cultivators from the Mountain and Sea Realm had arrived, the barriers separating the Nine Nations were trembling, and the eternal winds were showing signs of dissipating.