@Martin Riggs To be exact the two have been
Spoiler!
On dual cultivation and a couple for who knows how long. The earth modern times part of the story is just one of the two personification as they leisurely took the path of cultivation. Iirc there are other more identities the two use during the span of countless of eras and dimensions. The part why the two in this story have this newly wed settings, is so to help mc reconstruct his own cultivation to optimize his Dao for a more complete and higher level of ascensions.
