The Myriad Swords Convergence Formation, Purple Extreme Radiance Formation, Infinite Wind Formation... Xu Hei had replicated all the ancient formations of the Spirit Realm.

Xu Hei also summoned the Flame Sword and placed it in the Myriad Swords Convergence Formation as the formation's core.

The magical treasures Xu Hei possessed were all used by Great Ascension cultivators of the Spirit Realm, but many were no longer up to the task and needed to be enhanced in the environment of the outer heavens. If they could autonomously absorb Immortal Spiritual Qi, it meant they still had room for growth.

"Currently, the strongest magical treasures I have are the Aurora Flame, refined with the help of the Dragon Soul, and the Red Spot Star core."