The duel stipulated they could only use the materials provided by the convention. Although they could launch attacks and use refinement path killer moves, any methods affecting the soul or mind, like refreshing the mind or strengthening the soul, were completely prohibited.
Feng Jin Huang was the one who set this rule, it was to prevent Fang Yuan from using guts Gu to strengthen his soul during the duel.
The soul and mind were closely connected. Feng Jin Huang made this move to limit Fang Yuan's advantage in this aspect, but she had not expected she would be the first to suffer a drawback from this rule.
Whoosh!
Suddenly, Feng Jin Huang flicked her pinky finger, shooting out a speck of golden light.
The golden light was extremely fast, reaching Fang Yuan in the blink of an eye, targeting the refinement flames in Fang Yuan's hands.