In the Nine Provinces, there are dozens of Divine Beasts, among which only five to six have recorded histories passed down; the origins of the vast majority remain unknown. Unknown origins, however, often mean they were discovered within Grotto Heavens.
Including the Fire Phoenix within Cen Yueyue, it is said that a predecessor from the Southern Border spent great effort helping the Fire Phoenix break free three thousand years ago, bringing it out of the Grotto Heaven. Ever since, the Fire Phoenix has resided in the Southern Border, protecting it generation after generation.
Not just Divine Beasts, many sects' heritages also come from within Grotto Heavens, like the Cultivation Techniques of three peaks within the Purple Cloud Immortal Palace that originated from a sealed Ancient Cave Heaven.
For various noble families, the transmission of Cultivation Techniques certainly ranks highest, especially those that suit the Sect Disciples' training; these are of paramount importance.
