Based on the information he had gathered and his deductions about the three cultivation paths of the Spirit Realm, the Way of Essence Refinement was the strongest but also the most dangerous.
Refining each aperture required countless painstaking efforts and careful honing to yield extraordinary results.
So, it was not all that surprising to Pei Xuanjing that he had died once again due to Aperture Refinement.
In fact, Pei Xuanjing had fallen into a misconception he was not aware of - while the Way of Essence Refinement is indeed dangerous, it does not result in one inadvertently collapsing and dying like he did.
If that were the case, with a nearly surefire probability of death, hardly anyone would choose this path.
Under normal cultivation circumstances, even cultivators who practice the Way of Essence Refinement choose to strengthen their physical body first before honing their apertures.