Three-line trigram
Earth Trigram
坤 · Kun
Earth is associated here with receptive support and the image of earth. Its bottom-to-top binary line pattern is 000 where 1 represents yang and 0 represents yin.
Earth as a lower or upper trigram
As the lower trigram, Earth describes the inner or initiating three lines of a hexagram. As the upper trigram, it forms the outer or completing three lines. The meaning of a full hexagram comes from the complete six-line figure and textual tradition, not from simply adding two trigram keywords together.