Arctic Shark
Under normal conditions, spiritual energy could be considered a fluid, especially a plasma.
99% of the living beings in the Spiritual World could only absorb this energy when it was in the form of plasma, which was easily found in the atmosphere, in living beings, and in spiritual crystals.
Although the crystals were solid objects, the solid part was not crystallized spiritual energy as one might think. The solid part was just the envelope that contained a certain amount of spiritual energy plasma.
So, spiritual crystals and frozen spiritual energy were two completely different things!
Frozen spiritual energy was actually another physical form of spiritual energy that was completely crystallized, extremely dense, and difficult to access.