The Eastern Wasteland hadn't even formed an alliance, its power scattered, whereas the ten Immortal Sects of their Eastern Border had united to discuss affairs, their power even more concentrated. They were bound to hold an advantage.
Moreover, the Eastern Wasteland had to face not only itself but also East Breeze. After losing more than two hundred Golden Core Stage cultivators, how could they possibly let it go? By then, with their Eastern Border and East Breeze pincering the Eastern Wasteland from both sides, how could the Eastern Wasteland withstand the impending assault?
On the other side of their Eastern Border, that territory had already made non-aggression pacts with them, so the Eastern Border only needed to go all out against the Eastern Wasteland. No matter how one looked at it, victory was assured for the Eastern Border, and he couldn't fathom why the Peaceful Sects were hesitating to attack such a ripe opportunity.