Once a soul beast broke through its bottleneck and reached a two hundred-thousand year cultivation level, its power could rival that of a Transcendent Douluo.

Every one hundred thousand years after that would be a matter of life and death to the soul beast. Undoubtedly, every time the soul beast overcame such a deadly test, its power would increase exponentially.

It was like when Huo Yuhao first met the Ice Empress. The terrifying power of the Ice Empress was enough to fight a Rank 97 Titled Douluo. In the extreme north, even someone as powerful as Elder Xuan might not have been able to defeat her. Among the Ten Great Savage Beasts, however, the Ice Empress was only ranked seventh. 

As for the Snow Empress, the reason why she started to regress and almost self-destructed inside Huo Yuhao was because her own power was way too strong. 

After a soul beast broke through the five hundred-thousand year barrier, it would be as powerful as an Ultimate Douluo. In other words, the Snow Empress was as powerful as the Dragon Emperor...