geng-xu day pillar

Blades come first for 庚戌: 三命通會 卷一 calls it 刃剑之余, the remnants of swords and edged weapons, and says it likes slight fire and wood. The 納音, Hairpin and Bracelet Gold, points somewhere gentler. The book leaves that contrast between jewelry and leftover steel standing.

戌, the Dog, is an earth branch, and earth generates the metal above it. This site's table reads 戊 as Indirect Resource, 辛 as Rob Wealth and 丁 as Direct Officer. 三命通會 prints 丙 in place of 丁 here, and for 庚 that changes a name outright, since yang fire against yang metal is Seven Killings.

庚 begins at 巳, so 戌 is its sixth position, the stage named Decline, 衰. It is the step immediately after the peak.