Perhaps most have already forgotten, Xue En's Talent Abilities were not innate... Normally, such a bizarre family wouldn't be born.
He belongs to the "Inheritance System" among the Six Great Ability Systems. The reason it's called inheritance and not bloodline is that their ability values are often passed down from one generation to another, from a certain "source."
That source could be a Rule-level or even a higher powerful Taboo item, a super ancestor who has transformed into an Outside Domain Sky Demon, or perhaps only a special notebook that has inherited special skills.
Abilities can be copied, passed down from one generation to another, and the "supernatural families" that construct their own power systems with a certain attribute, ability, or skill as the core are known as the inheritance system.
