The Fourth Supreme Great Sun Immortal Dynasty birthed new life amidst its decay!
This Immortal Dynasty era rescued the ever-falling Immortal Dao Civilization, and moreover brought Immortal Dao Civilization back to one-tenth of the productivity of the Ancient Emperor Era, allowing the many Cultivators of the Endless Starry Sky to profit. The surplus productivity could be used to buy off all sides, greatly reducing the will to resist and increasing the political stability of the Immortal Dynasty.
In later generations' histories, the Fourth Immortal Dynasty era is what posterity knows best.
As for the Second and Third Supreme Great Sun Immortal Dynasty eras, in general only those with some understanding of history will be aware of them.
