"Regarding Spirit Beast evolution, there is a theory in academia called 'complete evolution and incomplete evolution,' or more easily understood as 'tier-skipping evolution and partial evolution.' Evolving from a Beetle Worm into a Flaming Celestial Ox is the former, where the potential will undoubtedly change, while evolving from a White Phoenix Parrot into a White Phoenix Giant Parrot is the latter, which only enhances size and combat strength, without fundamental changes to attributes or appearance, and the difficulty level is relatively low."
"You should also know that the potential of most White Phoenix Giant Parrots remains at the Green outstanding level, and only by investing massive resources do they have a slim chance to break through to the Blue Elite Level. This is one reason why the White Phoenix Parrot stayed in that base uncontracted for so long—its potential ceiling isn't considered high."