When ordinary Professionals advanced to the Seventh Rank, the fuel for their Spirit Flame was their own Sea of Spirit. Thus, during advancement, they had to burn it while doing everything possible to have the Spirit Flame temper their remaining Spiritual Power.
Although the quantity of Spiritual Power would decrease during this tempering, its quality would become increasingly pure until it crossed the threshold of qualitative change and completely ascended into High Rank Spiritual Power, Spiritualized Spiritual Power that feared no tempering by Spirit Flame.
However, due to the immense consumption required to sustain the Spirit Flame itself, this tempering process was extremely difficult. Once the Sea of Spirit burned past the critical threshold of seventy percent of its total volume, the chances of eventual success became vanishingly small.
But now, the Old Days Secret Scripture continuously output special energy, strengthening his foundational power. As soon as a portion of his Sea of Spirit had burned away, it was replenished again in the next moment.
This caused his breakthrough process to be supported almost entirely by the power of the Old Days Secret Scripture.
Compared to Seventh Rank Professionals who advanced through ordinary methods, Anvis's method held an enormous advantage. He was getting a tremendous bargain.
The Spirit Flame's purpose was not limited to tempering Spiritual Power. It could also temper the physical body or temper an initial spell, two other major options.
If a Professional did not actively interfere with the breakthrough process, the Spirit Flame would instinctively temper their Spiritual Power, while their physical body would also receive a small amount of passive tempering.
But according to the secret knowledge Anvis had seen in the family Library, if a Professional actively guided the Spirit Flame to temper their physical body while advancing to the High Rank, the strength