About 120 years ago.
In the later period of the Xingqiong Dynasty, the central imperial power declined, and the powerful families, local tycoons, and foreign forces (such as the nomadic "Cang Lang Royal Court" in the north, the "Witch and Gu Tribe" in the southern jungle, and the "Sand Sea Tribes" in the western desert) were too strong to lose. A huge rebellion broke out that swept the entire empire, involving powerful officials, vassal towns, and foreign races. The trigger may be the incompetent tyranny of the last emperor, a dispute over succession, or a shocking conspiracy.
* **Result:** Apocalypse City fell, the last emperor disappeared (or was killed), and the whereabouts of the "Star Emperor Seal" symbolizing orthodoxy is unknown. The empire fell apart in an instant, and powerful factions (clients, feudal lords, rebel leaders, and alien leaders) in various places established their own empires.
