Many things that were nothing new in the Immortal Realm had appeared in the Mortal Realm.
For instance, "puppets." Any wealthy household or grand tavern had puppet attendants. With Immortal Realm resources flourishing, and most of these mortals being descendants of cultivators, the Mortal Realm carried far more traces of cultivators.
After Heaven-and-Earth Sublimation, the Human Race had ultimately failed to preserve many of the mortal spirits from the Three Thousand Great Worlds.
Yet over these forty thousand years of Immortal Realm history, as the Human Race's destiny dispersed, descendants born to cultivators also had a chance of lacking Spiritual Roots. Still, that terrifying reproductive capacity had created one Mortal Realm after another across the Immortal Domains.
Under such circumstances, many orphans had also appeared. Their cultivator parents had abandoned them in the Mortal Realm, looking down on their own children because those children either lacked Spiritual Roots or possessed mixed, low-grade five-element Spiritual Roots.
Yu Xianfan and Su Zhi'an happened to be among them. Of course, such oddities were rare.
The Human Race was, after all, an Overlord Clan of the Immortal Realm. After rebuilding the Mortal Realm, cultivators entered worldly life and granted mortal spirits a lifetime of prosperity. As Immortal Realm resources flourished boundlessly, many things belonging to Human Race cultivators found their way into the Mortal Realm.
When Human Race mortals grew old, they could collect a "first-layer Qi Refining Realm" puppet from the authorities free of charge to care for them until their deaths. Once they were buried, it would be reclaimed.
As for the descendants whom cultivators had not abandoned, they lived even more comfortably. Every day, they were either sightseeing or on the road to sightseeing. The Mortal Realm's territory was simply too vast to ever finish seeing.
Nowadays, medical treatment and the