Celestial Immortals stood at the very pinnacle of this cultivation world.
Any immortal cultivation power with a Celestial Immortal presiding over it was a top-tier power.
Such top-tier powers generally did not forge mortal feuds with one another.
Even if their sect disciples or younger lineage members were slain, their Celestial Immortals would not pursue the matter.
Celestial Immortals were the equivalent of nuclear weapons!
With everyone possessing nuclear weapons, they naturally feared and respected one another, exercising restraint. No one would escalate a conflict.
Unless one side had absolute confidence that it could completely destroy the opposing Celestial Immortal and the top-tier power behind them.
Otherwise, as long as the opposing Celestial Immortal remained alive, they posed a threat to one's own sect or lineage.
Today, the two Celestial Immortal ancestors of the Thunder Family and the Yuan Family had come knocking.
First, they wanted to establish their might.
Second, they wanted to suppress the Mountain Sea Alliance.
But the Heavenly Secrets Elder's appearance had somewhat disrupted their plans.
Although the two of them together had no fear of the Heavenly Secrets Elder.
If another Celestial Immortal stood behind the Mountain Sea Alliance, however, that was another matter entirely.
Even if the Five Great Celestial Immortal Families joined forces and destroyed the Mountain Sea Alliance's foundations in the Myriad Demon Sea.
As long as the Celestial Immortal behind the Mountain Sea Alliance survived, the Five Great Celestial Immortal Families would inevitably suffer retaliation.
As Celestial Immortals, they feared nothing.
But from then on, the younger members of their lineages would have to watch their step.
The Celestial Immortal ancestors of the Thunder Family and the Yuan Family conferred in secret.
"Fellow Daoist Yuan, with that old ghost Heavenly Secrets protecting them today, I fear neither of us can do