Evelynn patted her stomach and nodded approvingly as she saw the immortal crystal was safe within her and didn't release any kind of undulations.
The inner world of immortals could only hold items that didn't have Will or items that had accepted them as their master, but at the same time, the energy capacity of the item also mattered.
It shouldn't exceed the cultivator's own capacity. Otherwise, problems would arise, including sickness and nausea, before they would throw up like they were spitting out food if they could withstand the pressure.
That was why spatial rings were always used to store things instead of inner worlds. The space inside spatial rings was more stable, and they wouldn't be affected by any kind of energy. The items in their inner world would affect them for better or worse.
