The Black Donkey ultimately paid the price for the outrageous claims it made.
This despicable donkey indeed possessed extraordinary talents and, with the benefits from the Corpse Spirit Flower, it directly advanced to the Nascent Soul Realm, Second Layer Heaven—after all, its Dantian Space wasn't as vast as Zhou Heng's, making the breakthrough much easier.
But within the same Great Realm, who could rival Zhou Heng?
The accumulation of 640-fold Spiritual Power allowed him to easily suppress the Nascent Soul Third Layer Heaven while being in the Nascent Soul First Layer Heaven himself. The despicable donkey, getting ahead of itself, challenged Zhou and ended up being ridden on its back by Zhou Heng, and was forced to serve as a mount for a day.
"Woof, Zhou, I will not let this humiliation go unavenged, mark this donkey's words!" the Black Donkey barked unwillingly.