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No matter how strong one was, even if they possessed many Dominator level soul pets, they still could not step into the Soul Master Grade. This issue had troubled Chu Mu for a very long time.
In the past, each level had its own threshold, just like how to step from the Soul Lord level to the Soul Emperor level was unattainable for many soul pets. However, as long as a soul pet's strength could make that leap, combined with one's own hard work, it was still possible to cross that threshold.
But the Soul Master Grade, according to human history, no matter what level a soul pet reached or how hard one cultivated, there was no qualification to transcend it, which seemed like a natural restriction.
Before the Fox Elder spoke, Old Man Han and Chu Mu were aware of the issue of racial limitations.
However, once he classified humans as soul pets, Chu Mu and Old Man Han thought of a racial limitation that was very similar to that of humans!