Regarding the origins of the nine great cultivation families, Meng Chao had heard Lu Siya mention some of them.
In fact, before Dragon City transmigrated, Earth was already in its 22nd century, a post-industrial and even post-information era. The whole society was extremely fragmented and atomized.
Traditional big families had long fallen apart, and the family size had gotten smaller with time. Even if four generations lived together, the total number of family members would at most be seven or eight, not more than ten people.
It was very difficult to give birth to a so-called "noble family" with only a few individuals in each generation.
However, after the Dragon City transmigrated, it was attacked by floods, viruses, zombies, and monsters one after another. The social order fell apart and returned to the bloody era where the strong preyed on the weak and the fittest survived.