Sanming TonghuiVol. 1, On the Nature and Fortune of the Sixty Jiazi (verdicts & remarks)
Gui Mao Metal is the ring, knob, bell, and clapper, delighting in blazing Fire and autumn. Nobleman, Broken Character [Po Zi], Suspended Needle [Xuan Zhen]. Ren Yin is Metal of self-extinction; Gui Mao is Metal of dispersed qi.
If they encounter multiple Fires, their qi is dispelled; only when Water and Earth pay homage to them is there auspiciousness. *Wu Xing Yao Lun* states: 'Ren Yin and Gui Mao are faint and thin Metal, endowed with the virtues of benevolent gentleness and righteous firmness.
In winter, they are vigorous and free of misfortune, and what seems ominous portends good fortune; in spring and summer, there is internal misfortune with external fortune, where good fortune is preceded by adversity.
If entering a noble pattern, their resolve and integrity are brilliant; if carrying sha, they become violent and cannot meet a natural end.'