The five officers, wu guan, are mian xiang's second major organizing layer alongside the twelve palaces, and the eyebrows open the list as the Guardian Officer, bao shou guan, sometimes translated the officer of longevity. Where the twelve palaces divide the face by domain of fortune, wealth, career, marriage and the rest, the five officers divide it instead by a smaller set of especially trusted features, eyebrows, eyes, nose, mouth and ears, each read for a broader quality of character and constitution rather than for one narrow department of fate. The eyebrows' inclusion among only five such features, when the palace system alone already gives them a full reading as the Siblings Palace, marks them as one of the tradition's most heavily weighted single features, asked to answer both a specific relational question and a broader constitutional one from the same physical evidence.
Long, well shaped eyebrows extending past the outer corner of the eye, smooth and evenly arched rather than broken or sparse, are read as a sign of longevity and good temperament under this officer reading, distinct in framing though not entirely separate in outcome from the harmonious sibling relationships the same brows indicate as the Siblings Palace. Thin, patchy or crossed brows are read, under the Guardian Officer's own terms, as a caution about a shorter or more difficult passage through life.