Of course, there was another primary reason: humans were not to be underestimated.
Wherever they went, humans' understanding and learning abilities were the best. The weapons of this era had also become more sophisticated than those of earlier years. High-ranking warriors and mages among humans being more powerful than Divine Beasts was no longer a rarity—a feat that, in earlier years, only scholarly warriors had achieved.
These human heroes had also established various guilds and sects, more numerous and larger in scope than those of the Divine Beasts, with broader membership and greater influence.
What amazed Aegean was that Bai Suqing had told him that many humanoid Divine Beasts had joined human sects, which Aegean found utterly perplexing.
Although Aegean had long known that in their history, some ancestors had become noble human warriors' mounts, which was rare but understandable, the idea of readily serving some mediocre people was absolutely unacceptable to him.