Sowing Worlds Across the Heavens

World structure: The world is centered on the "Source World". The protagonist has a [travel system] that can travel through the worlds, and at the same time, the [World Seed] is nurtured in the body, which can open up an exclusive inner world. Travel through the world to obtain the origin, laws, and creatures, and feed back the inner world to upgrade. The stronger the inner world, the higher the permission to travel, forming a positive cycle. Levels of the inner world: Dust World → Dust World → Small World → Middle Thousand World → Great Thousand World → Source World → Heavens The permission to travel is bound to the level of the inner world, and a higher-level world will be unlocked with each level up The protagonist's cultivation is bound to the inner world, and as the world upgrades, he will upgrade himself.