“So slow?” Chen Feng was shocked.

Next, his Magic Eyes of Darkness made another 100 rotations. Once again, only one strand of eye power was refined as a result.

Chen Feng grew anxious and he began utilizing the Heavengulping Absorption Technique. As expected, the rate of refinement increased greatly. Only 50 rotations from his Magic Eyes of Darkness were needed to grind out a strand of the eye power. However, due to the special attributes of the Heavengulping Absorption Technique, the rate at which he could refine and absorb the eye power increased further, going up several times faster.

Even so, this speed was still not good enough for Chen Feng. For him, this was still too slow. Thankfully, there was something about the refinement process that brought him a sense of comfort. Every strand of eye power he refined would increase his eye power rapidly.

“It is effective. It is just slightly slow.”

Although he felt dissatisfied with it, there was nothing he could do about it. All he could do was to mobilize the Longevity Tower’s power to extend time by a factor of 10. 

In other words, 10 days spent cultivating inside the Longevity Tower for Chen Feng was only the equivalent of one day outside.

Thus, Chen Feng spent...