Judging from the information obtained from refining the Divine Capacity Seed of Pot's Heaven, spaces can be broadly divided into five different tiers according to their characteristics.
The first is the most basic, unstable space. The essence of magic artifacts such as storage rings and storage bags is this kind of space.
Unstable spaces last only for a few decades to a hundred years. Due to their inherent instability, they ultimately collapse after reaching their limit.
The second tier refers to the Independent Spaces, like the courtyard space where Shen Yuan resides and the grotto residences developed by ancient great cultivators, belong to this category.
These independent spaces possess a relatively stable spatial structure with a circulation of Spirit Energy from both inside and outside, enabling the existence of living things and lasting for hundreds of years.