Thunderbolt Hell Iron Fortress, no shape seen in all directions, copper walls and iron ramparts a thousand zhang deep, golden light dazzles the eyes with lightning, misfortune clouds overhead bringing thunder, Demon King and generals wail in despair, even the soul of the Demon Emperor True Monarch fades away.
This is the scene at this moment.
The Thunder Series commands the divine, Purgatory Siege enfolds.
Tens of thousands of Demon Soldiers, trapped within, with misfortune clouds above them bringing incessant thunder, and endless abyss below with space inverted, all around, everywhere, copper walls and iron ramparts, lightning flashes scaring them away.
Such spells are no longer human efforts, but divine majesty!
Even a Taoist True Monarch would exhaust all his mana and still would find it difficult to invoke.
Only by setting up a ceremony and gathering the strength of tens of thousands can one cast it.