The trouble the Immortal Lords had to face wasn't limited to Sky Dragon City. The soul tide that erupted from Dragon Abyss during the time of extreme yin was just as great a problem for the Immortal Realm, and Honghao Heavenly Emperor had no choice but to redeploy a large number of troops to defend the immortal army's strongholds.
This was also the key reason Lu Xiaotian had chosen to strike during the time of extreme yin. Otherwise, with Sky Dragon City barely having established a foothold, it would have been hard to withstand wave after wave of fierce attacks from the main immortal army.
Honghao Heavenly Emperor and Yu Xuan Heavenly Emperor frowned as they looked toward Sky Dragon City, their eyes flickering with uncertainty. Just as they were about to make a move, their hearts suddenly gave another jolt, and both Heavenly Emperors turned toward Dragon Abyss.
"What a powerful surge of draconic energy!" Yu Xuan Heavenly Emperor drew a sharp breath, sensing a faint foreboding. A familiar feeling welled up in him, as if the situation were gradually slipping out of their control.
The last time the four Heavenly Emperors had attacked the Dragon Domain, they had seemed to hold every advantage at the outset, with overwhelming superiority in strength.
By every measure, the Dragon Domain should have faced nothing but annihilation. Yet the Dragon Lord had relied on luck to escape, even managing to scatter his limbs and spirit away. Worse, the main force of the immortal army had suffered an unprecedented rout in the Dragon Domain. Calling the casualties catastrophic was no exaggeration. The Dragon Domain's army, too, had gradually turned the tide through one unexpected twist after another.
Now, Dragon Abyss was clearly becoming one of those twists.
Deep within Dragon Abyss, several enormous