Chapter 148 Unforeseen Breakthrough

When Professionals advance to the Seventh Rank, the fuel for their Spirit Fire is their own Spirit Sea itself. Hence, during their advancement, they need to burn it while exerting all their effort to refine the remaining spiritual power with this Spirit Fire.

Although the quantity of spiritual power decreases during this refinement, its quality becomes increasingly pure, until it surpasses a certain transformative threshold and is completely sublimated into High Rank, spiritualized mental power that fears no refinement by the flames of the Spirit Fire.

But due to the intense consumption required to maintain the Spirit Fire itself, this refining process is extremely difficult. Once the burning of the Spirit Sea crosses a critical threshold of seventy percent of its total volume, the chances of success become exceedingly slim.