All humans have desires, and Anna could observe the manifestations of these various desires.
A lecherous person's heart would be filled with amorous visions.
A greedy person's heart would glitter with pearls and jewels.
Those who craved power had mountains and thrones in their hearts. Those who worshiped strength would manifest the image of a lion. Those who reveled in violence would have the shadows of swords and guns inside them.
Even those seemingly desireless Cultivators and Monks harbored desires in their hearts. In fact, their desires were often even grander. A Monk, for example, would see visions of a Divine Buddha or a Venerable.
They desired something more than life itself. It was precisely because this powerful desire suppressed their base instincts that they appeared so pure and ascetic.
Self-discipline exists for the sake of a greater desire.
And she could exploit these desires, guiding them as she pleased.
