Mae was shocked.
In the True Marial World, beast taming was very difficult, especially in the higher Heavens. That was because the higher Heaven one entered, the more talented the beasts would become at a rate that was exponential to the Heavens in question.
By the Fourth, Fifth and Sixth Heavens, beasts would have already long since surpassed the Ancestral Grade and have entered the Origin Grades to become God Beasts. The shocking part about God Beasts was that, unlike humans, they were practically guaranteed to reach their potential. So long as a God Beast was born, so long as they were given adequate time, they would reach the corresponding Sky God Realm to their Talent Grade.
Simply put, the largest concentration of Sky Gods wasn't within the human race, or other humanoid races, they were most definitely found within the beast races.