When internal conflicts within a power group become increasingly deep and irreconcilable, the best solution is to initiate an external war to divert the conflicts.
The Anti-Light Alliance, an organization composed of numerous sects and clans, cannot claim to be completely united internally; some sects even have a history of major conflicts with each other.
This loosely organized alliance has managed to endure for thousands of years mainly because they have a formidable adversary, one that prevents them from disbanding.
All the high-level cultivators within the Anti-Light Alliance understand that as long as the Great Brightness Immortal Palace exists, the alliance cannot dissolve; otherwise, no one can withstand the autumn reckoning of the Great Brightness Immortal Palace.