Despair

Though the resultant Dragon Soul Chenglei ended up with after absorbing it all was a half-step below that grade, it still meant that Chenglei was only a step away from having the strongest Dragon Soul in countless eras. Even the Dragon King only reached this stage! 

This was hardly the only benefit of Chenglei's mental breakthrough. 

For one, he felt that his cultivation speed had skyrocketed. He felt like he only needed 10 years to reach the peak of the 12th Dao Formation Stage, 100 years to become a Higher Existence, and that he could transcend immediately after clearing his Higher Existence trial! This was the benefit of breaking free from the shackles of the Heavens! 

To make matters more shocking, this was only if he didn't reform his Dao Heart first. If he managed to find his path and form it, he would be able to transcend in as little as a decade!