Eastern Azure Dragon, Western White Tiger, Southern Vermilion Bird, and Western Xuanwu.
The territories belonging to these four directions are precisely what they command. This is also why their four clans are able to shed the titles of exotic beasts and demon beasts within the Myriad Heavens and Worlds, earning the name of God Beasts.
If their territories vanish, the so-called name of God Beast would then become meaningless.
This is the secret that Bai Qiu, Long Ao Tian, and even Su Chengyu have yet to fully comprehend, as well as one of the reasons they are now present in the Lower Realm.
It wasn't disclosed upon their first meeting because, at the time, Bai Qiu and Long Ao Tian genuinely didn't know about this matter. Now, the secret holds little significance.
After all, Bai Qiu and Long Ao Tian have already decided on their course of action, tying their fates to Su Chengyu as if they're ants on the same rope.
And Ling Xiao, standing before them...
