Sanming TonghuiVol. 1, On the Nature and Fortune of the Sixty Jiazi (verdicts & remarks)
Jia Wu Metal is refined metal forged a hundred times; it delights in Water, Wood, and Earth. Advancing Spirit, Virtue Combination (Harmony), Flat Head, Broken Character, Suspended Needle. Jia Wu is Self-Defeated Metal, also called Unyielding Metal.
Meeting flourishing Fire, its vessel is formed. It dreads the harmful Fire of Ding Mao, Ding You, and Wu Zi. The Essential Discourse on the Five Elements says: "Jia Wu Metal is an Advancing Spirit and a Chief Qi, possessing firm, luminous virtue.
Autumn and winter bring auspiciousness, while spring and summer may portend misfortune; entering a noble pattern, it commands the examination halls and establishes merit in leading the masses; met out of season and accompanied by sha, it turns tyrannical, ruthless, ungrateful, and lacking in righteousness."