After fusing with the Holy Beast, Su Yang did not immediately go to find the Six Trigrams Saint Venerable, but first found a place to cultivate for a while, elevating the physical body of the Holy Beast to the Saint Venerable Realm.
In this way, from the outside, this Demon Beast also appeared to be a Saint Venerable, leaving no flaws at all.
Moreover, such a wandering Holy Beast from the borderlands would hardly be noticed by other Demon Beasts. It's not uncommon for wandering Demon Beasts to encounter fortuitous opportunities and ascend to become Saint Venerables; this often happens in the Demon Beast world. Therefore, Su Yang replacing the Six Trigrams Saint Venerable would not be problematic at all.
However, to ensure absolute safety, Su Yang first slaughtered all other Holy Beasts in the region to prevent anyone familiar with the Holy Beast from leaking the information.
