The Fortune and Virtue Palace, fu de gong, carries a second name, the Heavenly Granary, tian cang, that names its logic more precisely than the palace's plainer title does. Read from the two areas of upper forehead directly above the outer end of each eyebrow, the palace covers accumulated blessing built specifically through good conduct rather than through active striving, a moral rather than a purely fortunate reading, distinct from every other palace in the twelve part system that reads effort, inheritance or circumstance instead. The granary image makes the underlying claim explicit: virtue, in this reading, is stored the way grain is stored, accumulated gradually and drawn down over time rather than earned in a single transaction, so a full, rounded fullness at this spot is read as good character bringing its own reward across a lifetime.
A hollow or sunken area here carries a correspondingly specific caution, that whatever fortune once accumulated in this granary has already been spent rather than kept in reserve. That framing gives the Fortune and Virtue Palace a causal logic closer to karma than to the era's ordinary run of luck, one of the clearest points in the whole system where an explicitly moral claim, rather than a claim about health, wealth or relationship, is written directly into the face.