"World" might be a bit too grandiose a term.

Something a tier lower would be more fitting, like a "minor world," or a "grotto-heaven."

There was no doubt. The nascent Five Elements Grotto-Heavens were forming right here.

"The Gate of the Primal Mother—this is the root of heaven and earth." Li Fan murmured to himself.[1]

Similar phrases existed in the ancient texts of the Xuanhuang World.

Heaven and earth nurtured all living things. But from where had heaven and earth itself originated?

Among cultivators, there was no shortage of those with an inquisitive spirit. 

Beyond those who ceaselessly sought to re-establish contact with cultivation worlds outside the Xuanhuang World, there existed another faction dedicated entirely to studying the birth of heaven and earth and the origin of living beings. Li Fan had...