This domain seems not entirely in the subspace, but within Su Yu's body!
However, this transformation is only half-completed and not truly finished.
The edge of the subspace domain is not fully closed and still maintains contact and energy exchange with the subspace.
This change appears to be just a prototype, a beginning.
Even though it's just a prototype, it has given Su Yu immense feedback.
Su Yu feels that his subspace domain is already partially "self-sufficient."
It can independently produce a large amount of powerful spiritual energy without relying on the subspace itself!
The spiritual energy Su Yu originally acquired was actually "produced" in the subspace.
The emotions, wills, knowledge, desires of living beings... such abstract concepts merge and transform in the subspace into subspace spiritual power that can affect real matter, which is then absorbed and utilized by spiritual users like Su Yu.
