There were actually not many methods that could accelerate the condensation of Great Dao Stones. At the very least, the five secret manuals Chen Fei had bought all ultimately pointed to methods that came at the cost of damaging one's own source.
Upon reaching the Realm Lord Realm, one's source was still the Essence, Qi, and Spirit Soul, but the reason a Realm Lord Realm cultivator's Essence, Qi, and Spirit Soul could accelerate the condensation of Great Dao Stones was fundamentally because of the Great Dao Particles contained within them.
To put it plainly, it was actually somewhat like tearing down the east wall to patch up the west wall.
Once the principle was laid bare, one would discover that this method of accelerating Great Dao Stone condensation was as tasteless as chicken ribs.
The reason Great Dao Stones were so valuable was that they could help Realm Lords raise their cultivation. Yet now, in order to condense Great Dao Stones, one had to damage the Great Dao Particles within one's own Essence, Qi, and Spirit Soul in reverse, using them to accelerate the condensation of Great Dao Stones.
Of course, if it were truly that simple and crude, then whether it was the secret manuals Chen Fei had bought or the Great Dao Stone Derivation Zhu Shiyu had given him, none of them could possibly have formed into secret manuals, because then they would become completely worthless.
These secret manuals slowly consumed the Great Dao Particles within the body, striving to ensure that the lost Great Dao Particles could be replenished through autonomous cultivation.
It was equivalent to a Realm Lord treating himself as a renewable source of energy, constantly depleting himself, then using Heaven and Earth Essence Qi to replenish the lost Great Dao Particles, before continuing to