These great arrays not only serve to collect the power of belief offered by believers with maximum efficiency, but also protect the believers and the entire Divine Country.
Even if visitors from the Outer Realm descend, they will instantly suffer the backlash of the arrays. If any array is attacked, all remaining arrays can trigger a chain reaction, pulling one hair and affecting the whole body, gathering all strength, forming a protective shield with the supreme power of incense to prevent outsiders from threatening the safety of the Three Realms.
If strong external forces cause massive damage to the protective shield, the rest of the arrays will also launch counterattacks with arrays spread across the continent to ensure the safety of the believers within.
