The Red Moon incident, also known as the Night of the Red Moon, saw the Kingdom of Chaos, which had once flourished intensely, utterly wiped out in one night. This night was also called the watershed of the Era of Chaos.
After the Red Moon, the Orthodox Court Followers were completely victorious, and Nether ushered in the Fourth Era, which continues to this day as the "Radiant Epoch".
The surviving Seven Great Esoteric Sect Followers then fled to the northern continent, establishing what is now The Avad Empire, governed by the Seven Standing Committees, ruling the entire Esoteric Country.
No one knows how the Kingdom of Chaos was destroyed; the history of that night vanished into the River of Life, leaving not a trace behind.