Within the Taiyin Primordial Spirit's inner cosmos.
Taiyin Energy pervades, this is a universe based on the Taiyin Rule, with cold and chill as its main theme.
Normally speaking.
Path Splitting Realm experts have already nurtured an inner universe.
Its internal rules are perfected and balanced, independent of the real universe.
But in reality, all inner universes that are nurtured are based on the insights into their own realm by Path Splitting Realm experts.
And each Path Splitting Realm expert has different insights into the rules.
Each has its own focus.
This influences the inner universe.
The Taiyin Primordial Spirit's inner universe is just like this.
Clearly focused on Taiyin.
The Taiyang Divine Spirit is the same, focused on Taiyang.
As for the true self? The fusion of Taiyin and Taiyang, transforming into Taiji, deriving all things, almost without a particular focus.