The Warm-Hearted Ruth!

However, he also discovered a problem. After reaching tier-6, the effect of the crystal seemed to have weakened.

Su Han shook his head. No matter what, this crystal was the first product that he could find to replace the magic core.

After reaching tier-4, absorbing the power of a tier-3 magic core was no longer of much use. However, if he continued to absorb the power of a tier-4 magic core to complete the rapid realm like before, the difficulty would be unimaginable.

Magic nuclei that could reach tier-4 and above were rare to begin with. Moreover, to become a tier-7 mage...

He would need at least 400,000 spiritual power.

If he were to increase the power using a tier-4 magic nucleus by 1,000 points, he would need at least 200 magic nuclei!