The 4th layer was different in many ways from the lower layers of the Celestial Fields. Unlike the previous layers, there was no pre-existing known landmass. Supposedly, a storm of elemental Qi had raged where even Elementals could not survive.
The first Sovereign Tiers tamed the storm and formed places to live not only for them but for those they wished to bring up to serve them.
Legends and myths abound about that time epochs ago but the nature of the created landmass proved more fragile than the powerful Sovereign Tiers intended.
As Sovereign Tiers died or ascended and others replaced them, the lost territories were reshaped by new owners. Some areas that produced natural treasures were preserved but the new cultivators changed everything drastically not only on ascension but during battle as well.
It was only several epochs later that several stable areas finally formed and became the basis of the 3 main lands.
