Spirit world...
A world of divine power.
Everything inside is make by divine power.
Such as pyramids / city wall tiles / sun rays / streets / screens..
Everything is illusionized by the thoughts of the gods.
Here, faith is the most powerful force, and only with strong beliefs can it last forever.
Otherwise the disintegration is only in an instant.
The human soul is the belief of divine power. When we leave the world, we will arrive here.
Strong power live,
Weak would leave.
Therefore, in the realm of the gods, what you see and hear is the most powerful commemoration/belief of the mortal world.