The formation nexus of the Earth Yuan Array is the key to linking the formations of the seventy-two Immortal Mountains. It couldn't be included in the Green Cloud Cave, so it was placed at the outer mountain gate of the Red Flame Sect.
Controlling the nexus allows one to mobilize the power of the grand array to execute actions such as killing, defense, suppression, confusion, and refining. If unrestrictedly depleting the earth vein and spiritual vein, it can even contend with and suppress Divine Immortals!
If anything were to happen to the Red Flame Sect, like internal strife breaking out between different factions, the sect's leadership being controlled by enemies, or True Immortal figures infiltrating, once this grand array is fully controlled and operated with full force, even Shen Mo could be trapped and refined to death within it.
Therefore, Shen Mo was particularly cautious when arranging the array's authority...
