Ling Han and the seven ultimate elites retreated. Extermination and the others didn't give chase.
They were all at the Seventh Tier, and they were all indestructible and undying, so what difference would it make even if they caught up?
They simply needed to guarantee that Hysteria could continue to advance.
When Ling Han and the others retreated from the main battlefield, the elites fighting on the secondary battlefield also flew over. They had no option but to do so. Following the fall of the main battlefield, Hysteria continued to charge forward and move onto the secondary battlefield. Thus, how could these ordinary Heavenly Venerates stop the charge of a transcendent dimension?
They naturally had no option but to retreat.
The last time they had performed a full-scale retreat was when Hysteria had triggered a devastating storm of energy. Now, less than one epoch later, they were forced to perform another full-scale retreat.