Endless World: Genesis

What we are talking about here is the composition of the endless world, and the protagonist is this world! We started out as a small world plane with nothing, built from scratch. In the future, small worlds that will attack or annex other planes will gradually increase their world level, thereby enriching the content of the world and eventually becoming an endless world! This is not the main framework of all endless world books, but it may be the only way for the evolution of all plane worlds!