Between the Buddha Kingdoms, disdain for each other and even outright conflict were common occurrences.
But all these disputes quickly evolved into three factions after the Great Flood: those who steadfastly guarded Xi Tuo Continent, those who sought refuge in other continents, or those who remained neutral but were caught in a dilemma.
However, after the elders like Ci Wu sacrificed themselves to mend the heavens, and the Outer Realm Heavenly Demons used the reincarnated Cultivators of Tupi Continent to massacre monks en masse, only one faction remained.
Survive!
Due to this shared goal, all the surviving monks, regardless of ideological differences and personal grievances, banded together in the freezing wastelands of the extreme north for warmth and survival.
It was for the same reason that witnessing their companions being devoured by these Outer Realm Heavenly Demons, without even stirring up the slightest ripple.