Immortal Zi Wei's analysis had not been wrong.
Because Fate Gu existed, Gu Immortals of ancient times could not travel into the future, nor could future Gu Immortals come to the present.
But as Fate Gu was damaged, the restrictions in the time path had loosened considerably. Spring Autumn Cicada was the best example. Though it could not allow a Gu Immortal to return completely to the past, it could transmit a will back.
Killer moves such as Future Self, Forefathers, and Successors Follow worked the same way. They borrowed the state of a certain figure from the past or future and projected it into the present.
Once Fate Gu was completely restored, these killer moves would become ineffective.
Immortal Zi Wei knew the reason; naturally, Bing Sai Chuan had long understood it as well.
But he had no solution.
He could not destroy the Refinement Dao Great Array, because once it was destroyed, Heavenly Court's results from repairing Fate Gu this time would all go down the drain.
An overly damaged Fate Gu would be useless even if Longevity Heaven obtained it. They would still have to imitate Heavenly Court and continue repairing it.
But Bing Sai Chuan knew full well that Longevity Heaven did not possess Heavenly Court's immense foundation, nor did it have the latter's Human Dao Means, much less the Unfailing Inheritance. They simply had no ability to repair Fate Gu!
Since they could not destroy the Refinement Dao Great Array, Longevity Heaven could only force their way through it, enter Sky Watching Tower, and seize Fate Gu by force.
Regarding this, Bing Sai Chuan had long since dispatched Grandmaster Five Elements and Bull Demon.
But this was already the limit.
It was not that he did not wish to send more reinforcements. Northern Plains experts