C1955 Tianhe River

Spirit Mountain Universe were divided into Four Yin Yang Realm, Beihe Yin Yang Realm, Nanhe Yin Yang Realm, Dark Yellow Yin Yang Realm, and Yin Yang Realm of heaven and earth.

The Four Yin Yang Realm stood guard in all four directions.

Kong Mu's group's mission destination was the western side of Beihe Yin Yang Realm, the Milky Way