Every Star Beast has its transformation limit, just like the stubborn donkey. Under normal circumstances, the Peak Sixth Rank is its limit. Afterward, no matter how much Star Source Power it swallows, it can only remain stuck at the Peak Sixth Rank. Meanwhile, those ancient variant beasts can reach the Seventh Order, Eighth Order, or even the Ninth Order, or even transform to the ultimate extreme.
Moyang's idea was not entirely impossible. There are countless rare treasures of heaven and earth within the Star Domain, and if he were to refine some heaven-defying precious pills, it would be no difficult task to make the stubborn donkey transform.
At least for him, this was not difficult.
Chapter 687