ren-chen day pillar

壬 water is stored at 辰, the Tomb of water in 五行大義 and 神峰通考 alike. 五行大義 argues that earth should lie here too and gives the phrase 水土共墓, water and earth share a grave, on the ground that water is earth's wife. Earth is also what controls water, so the pair's seat both contains and restrains the stem.

戊 is Seven Killings from 壬, 乙 is Hurting Officer and 癸 is Rob Wealth by this site's naming. 淵海子平 calls a yang stem meeting its yin partner 敗財 in its chapter on the subject, and 神峰通考 prints 劫財 for the same case, so that last name comes with a choice. 三命通會 writes 壬 in place of 癸, which would make it a plain Friend.

Dragon imagery comes with the branch. 三命通會 卷一 calls the pair 龙水, dragon water, and says 喜雷电及春夏, pleased by thunder and lightning, spring and summer. Thunder and lightning are exactly the images it gave to 戊子 and 己丑, so the entries in this chapter talk to each other. 長流水, Long-Flowing Water, is the 納音 name.