It was not surprising to gain a corresponding skill after a skill was upgraded, so Chu Feng did not think much of it.
Then, he continued to add points, maxing out the three skills of the Mirage Butterfly. Rather than maxing them out, it was better to say that he had made them all reach level 70.
Following that, he upgraded all of the Mirage Butterfly's other skills to level 60. With this, he had used up more than two million enhancement points.
However, it was worth mentioning that the Mirage Butterfly's aura had soared as a result and it had reached commander level 10.
This time, Chu Feng finally understood that the enhancement points were still mainly used to add points to skills. The more skills the beast had, the harder it was to raise the beast's realm.
The Mirage Butterfly had many skills. Even if Chu Feng used up another two million enhancement points, he probably wouldn't be able to raise it to the king level.