In the Secret Martial world, Spirit-level Martial Artists can cultivate spirit energy, control spirit power, Crown-grade can project martial art projections to slay their opponents!
However, if mortal bodies want to pry open higher-level restrictions, they must resort to the power of the Supreme Mother River. But without the filtering ability of the Spiritual Puzzle of the Beast Master System, there is a good probability they would be contaminated and turn into mutants!
Besides, martial artists have limited methods, unlike humans from the Main World, who can channel the power of the Mother River!
Therefore, to break through the Radiant Moon Tier, the solution provided by the Eye of Truth is:
Use the secret method of calling out to the Mother River to transform the spirit energy granted by the Supreme Mother River. Instead of affecting their physical strength, transfer it to Secret Martial Projections.