Ye Tianfan found it somewhat strange why the Primordial True Person would do this, but he quickly understood the reasoning behind it.
The Primordial True Person was likely trying to obtain more experimental materials. After all, when they researched pure spiritual energy, they only had one creature from beyond the wall for the experiment. Although this creature could regenerate infinitely, it was still just one creature.
Thus, the Primordial True Person wanted to acquire some traces left by other creatures from beyond the wall after their death. Then, when research began later, they would bring these out for comparison.
This was to further perfect the pure spiritual energy. Currently, the pure spiritual energy researched by the Primordial True Person is based on that one creature from beyond the wall.
