The Three Realms were no longer the Prehistoric World of the past; battles among Quasi-Saint level powers could cause irrevocable damage to the Three Realms.
Even merely allowing the aftershocks of Jiang Chen's clash with the Primordial Heavenly Demon to spread could leave Cang Mountain unharmed, but risk destruction for most of the Eastern Sea.
However potent the power of countless Heavenly Demons, they could not stand against the dire formations of the ancient world.
The Cycle of the Star Array, the Twelve Dutian God-killing Array, and the Immortal Slaying Array, were reckoned the three supreme formations in the prehistoric era and the only three formations that could pose a threat to Saints.
Being capable of threatening Saints was a testament to the terrifying power of these three formations. True, countless Heavenly Demons were formidable, but they were unable to pose a threat to Saints.
