In the blink of an eye, several more months had passed.
Inside the Small World, Su Shi'er sat cross-legged on the ground, a dense aura brimming with vitality emanating from his body and swirling around him.
Looking inward, his consciousness sank into a void.
Within the void, five-colored lights intertwined. Among them, the azure-blue and earth-yellow radiances shone brightest, neither yielding an inch to the other.
The grass-green light came next, yet it far surpassed the fiery-red and golden-yellow lights.
Before him, handful after handful of crystals crumbled into powder and scattered across the ground.
Over these past months, he had long since completely refined and absorbed three top-grade Earth Attribute Spirit Crystals, successfully raising his earth spiritual root to the top grade.
As for the wood-attribute Spirit Crystals condensed from the Ageless Spring, after being tempered by the Heaven and Earth Furnace, they had ultimately produced only one top-grade wood-attribute Spirit Crystal, along with several dozen high-grade ones.
Naturally, Su Shi'er had not used the high-grade Ageless Spring Spirit Crystals.
He had only absorbed and refined the final top-grade Ageless Spring Spirit Crystal.
The result was that his wood spiritual root aptitude had merely risen to the peak of the high grade. There was still a slight gap before it could truly become a top-grade Wood Spiritual Root.
That gap seemed tiny, but in truth, crossing from a high-grade to a top-grade Wood Spiritual Root required a truly staggering amount of cultivation resources.
He would need at least one, perhaps even two more top-grade Ageless Spring Spirit Crystals to make it possible.
"Sure enough, it was absolutely necessary to trade Mu Chengxue for the Source of the Ten Thousand Year Ageless Spring.
"Other than what I have already used, what remains simply isn't enough to raise my wood spiritual