The Kaiyang Eternal Wind Sword Formation, this move was acquired by Tie Dan from the remains of the Sword Master, it's the true transmission of the Kaiyang lineage's sword formation.
The Kaiyang Peak is the first peak upon entering the Nine Yin Mountain, thus the Outer Mountain Disciples, sword boys, and Sword Servants are all placed to reside on this mountain, and await official admission into the sect after the Nine Yin Sword Discussion to receive their sword transmission.
Therefore, successive Kaiyang Sword Masters and various disciples have also been responsible for guarding the Nine Yin Mountain Protection Array, and this Kaiyang Eternal Wind is the first transformation of the Mountain Guarding Sword Formation.
