To defeat a powerful enemy, forcibly attacking from the outside is very difficult. But if you corrode him from within, maybe it won't take long for the former giant to fall on its own, unable to recover.
Back then, the main reason for the decline of the wild tribes was internal division. After the wild tribes annexed several other tribes, their overall power grew unprecedentedly. But as their strength increased, so did their problems. The wild tribes were internally split into several factions, and with Long Yuan stirring the pot, they quickly fractured internally. Moreover, those tribes that had submitted to the wild tribes mostly offered lip service without truly accepting their rule. The wild tribes still had to support these other tribes, which was a tremendous drain.
