In the 91st year of Datong Calendar, on June 16th.
It was one year after Yu Xian's breakthrough to the God Transformation stage.
With the absence of Demon Emperor Level threats, the Bright Moon Heavenly City and the Dual Bright Heavenly City's territories were cleared of demonic beasts. The Daoist Soldier Corps and the Cultivator Corps guarded the border, preventing large groups of beasts from entering the two territories. Thus, a new era began for both places.
In Former Chongming Heavenly City.
Once a bustling city, it now lay empty and desolate. The buildings within the walls had been razed at some point, replaced by ancient trees transplanted from the depths of mountains. A main city and four satellite cities became one large and four small enclosures, using the city walls as fences to form a nearly 100 square kilometers Demon Emperor Cage.
Each cage held a single Demon Emperor.