ding-mao day pillar

A small yin fire over a branch of pure wood. 卯 feeds 丁 in the element cycle, yet the reversed count for yin stems lands on Sickness at this spot, so two measures point different ways. Sickness marks one seat in a round of twelve, and 三命通會 words it only as things ailing the way a person ails before the round moves on.

The common table hides just 乙 in 卯, and from 丁 that is Indirect Resource: wood feeding fire at matching polarity. 淵海子平 lists the same lone stem. 三命通會 gives 甲 the first seven days of the month before 乙 takes over, and the 神峰通考 verse skips 卯 entirely.

If 丙寅 is the charcoal, 丁卯 is what rises from it. Both carry the 納音 爐中火, and 三命通會 卷一 calls this half 炉烟, furnace smoke. The entry says 喜巽地及秋冬, pleased by the 巽 quarter and by autumn and winter. 巽 is a trigram name, which 淵海子平 ties to the branch 巳.