After returning to Ironwood Manor, Lin Yi spent two days playing with Qing Tan before throwing himself into cultivation once more.
Since his Spiritual Energy had only recently broken through to the Four Symbol Rune Master level, it would be difficult to make any substantial improvement in a short time. Thus, Lin Yi devoted more of his time to cultivating Yuan Power.
Under his wholehearted cultivation, his Yuan Power also made considerable progress.
When Lin Yi had first broken through to the Lesser Perfection of Core Formation, nine star patterns had covered half of the walnut-sized Yuan Dan, and half of its surface had been covered in dark gold.
Now, the dark-gold color on the surface of the Yuan Dan had grown increasingly dense, and the area it covered had also continued to expand...
That day, after Lin Yi once again finished refining and absorbing a Yin Yang Pearl, the nine star patterns in his dantian finally covered the entire surface of the Yuan Dan. The whole Yuan Dan completely turned dark gold!
When the Yuan Dan was entirely covered in dark gold, an aura nearly ten times more powerful than that of the Lesser Perfection of Core Formation slowly spread from Lin Yi's body!
Lin Yi's tightly closed eyes suddenly opened as blinding dark-gold light shot out, piercing through a large tree several meters away!
Feeling the vigorous Yuan Power flowing through his meridians—nearly ten times stronger than before—a faint trace of delight appeared on Lin Yi's face.
He could feel that the Yuan Power contained within the Yuan Dan in his dantian was now nearly ten times as vigorous as that of the Lesser Perfection of Core Formation!
"Two months have passed since the Tower Competition ended. Great Perfection of Yuan Dan Stage... I've finally reached it..."
Lin