bing-chen day pillar

堤岸, an embankment, is what 三命通會 卷一 sees in this pair, and the entry says it likes metal and wood. It belongs under the 納音 Earth in the Sand, and earth is also the element of the Dragon branch 辰.

Fire creates earth, so 丙 gives to its seat. In this site's table 戊 is the Eating God, 乙 Direct Resource and 癸 Direct Officer. 三命通會 has 壬 in the slot of 癸, and yang water facing yang fire would be named Seven Killings, so a single table choice alters the label here.

Counting from 寅, where 丙 has its Growth, the third place is Crown and Belt, 冠帶. Its name refers to the formal clothing of someone newly grown.