Although the Myriad Sword Demon Extermination Grand Formation was powerful enough to kill any enemies who came calling, if the Outer Realm Cultivators sent too many Universe Flying Saucers—especially the self-destructing kind—it might still be possible for them to strike at the formation's foundation. If the formation were destroyed, Ling Tian and the others would have nowhere left to hide.
Perhaps they could hide in Fengyun Pavilion for a while without any trouble, but during that time, the Outer Realm Cultivators would frantically build new bases. The great powers of the God Realm simply couldn't stop them, which meant the Outer Realm Cultivators would be able to manufacture all kinds of Universe Flying Saucers much faster in the future.
It was even possible that bases belonging to the Outer Realm Cultivators would spread across the entire God Realm. If that happened, the God Realm would fall into their hands.
Just imagine: if the Outer Realm Cultivators built many bases in the God Realm, they would be able to manufacture all kinds of Universe Flying Saucers at a terrifying rate. They could then send thousands upon thousands of self-destructing saucers to bombard the Myriad Sword Demon Extermination Grand Formation without pause. Destroying it would hardly be difficult. After all, the formation needed energy to keep running. Once that energy was spent, the formation would be useless.
Although the Myriad Sword Demon Extermination Grand Formation could draw energy from Heaven and Earth, it couldn't do so as quickly as countless Divine Origin Stones could supply it. Naturally, this would greatly weaken the formation. At that point, it wouldn't be impossible for the Outer Realm Cultivators to destroy the formation and then Fengyun Realm as well.
The great powers of the God Realm could threaten the Outer Realm Cultivators if they joined forces,