The Aeolya dived deep into the Promenades to seek their origins. They experimented on the microbes and organisms that were discovered, and sewed onto Helixes.
In Mourning Cry Promenade, at the Tear of the Burning Ember, The Phylx bred Soot. The Senate of Citadels argued over the Soot’s value, its part in their origin. The oldest of the Citadels saw Soot as the same as themselves, but several of the younger Citadels found a connection insulting, and The Great Hemorrhaging broke out amongst Citadels. Reaching a cold war, Promenades were divided amongst Citadels as territories.
The Zyius Citadel was granted the Mourning Cry Promenade, and immediately began building their primary outpost, Uluuru City, at The Burning Ember. To hasten the spread of Zyius colonies, Atchium were created for experimentation to facilitate adaption to climate changes.
As Ulurru City’s opulence grew, Atchium’s role transitioned from experiment to slave. Eventually, the Atchium outnumbered their creators and engineered independence by disrupting economic benefits to resource cultivation. The Atchium created environmental disasters that isolated outposts and colonies, resulting in most forces being removed from trade-protection to being applied to maintaining order. With resources deemed inadequate, the Zyius emigrated back up Promenades to The Aeolyan Belt, abandoning the outpost to the Atchium.