As for his Contracted Animals, their strength too had to reach at least the Fifth Order.
And that was simply the bare minimum, naturally, the stronger their abilities, the better.
Even though he could use the Attribute Transfer Ability to help enhance the strength of his subordinates, innate power was crucial; when combined, their Combat Power would naturally increase significantly.
Not just the Mutated Animals, Ye Feng himself also needed to prepare, and any strength that ought to be improved had to be enhanced as soon as possible.
Of course, he had already reached the peak of the Sixth Order, and it was impossible to advance further in terms of Realm, but there was still room for improvement in Combat Power.
For instance, he needed to develop the Spiritual Power Techniques as quickly as possible.
In fact, he had already completed at least 95% of the progress. If all went well, he might finish the research today; even if it took a little longer, it should be done by tomorrow.