xin-wei day pillar

Earth gives rise to metal, which makes 未 a supporting seat for 辛 on the element count. Running in reverse as a yin stem does, 辛 reaches Decline here. 三命通會 glosses that seat in one line: the form of things fades as a person's vigor fades.

己, 丁 and 乙 come out from 辛 as Indirect Resource, Seven Killings and Indirect Wealth, each at the same polarity as the day stem. That neat match belongs to this one table. 三命通會 has 甲 instead of 乙 and calls 未 the store of 甲 wood, and 甲 is yang, so from 辛 it would be Direct Wealth.

Here 三命通會 卷一 gives the roadside 納音 a surprise: 辛未土，含万宝，待秋成, earth holding ten thousand treasures and waiting for autumn to complete them. Its partner 庚午 was only dry ground. The entry goes on with 喜秋及火, pleased by autumn and fire. 未 is the last month of summer, so harvest is close at hand in the calendar, though the book offers no argument for the image.