Formation of Celestia, and Ao's return to Slumber

Ao then harnessed this power of creation, and formed the first true world, Celestia. Celestia was a beautify utopia, combining powers all four elements, and empowered by the Positive energy with in the Inner planes.

Within Celestia, Ao formed the first living beings. Creations of pure power and energy, the Celest. These beings of great power lived perfect lives, wanting for nothing, enjoying the pleasures of the Celestia.
  Surrounding Celestia, Ao carved the Astral Sea, a endless plane of light, created with the leftover energy of creation. The Astral sea, extended through all of existence, and pushed the bounds of existence ever outward. Once Ao had created Celestia and the Astral Sea, it is said that they began to sleep, and never again has Ao's power been witnessed or Their will known. It is believed that Ao knew all of what would transpire, and crafted the universe from beginning to end with every tiny action They took.