The 64 hexagrams: two trigrams stacked together

Each of the eight three-line trigrams can serve as either the lower or upper trigram. Stacking them produces 8 × 8 = 64 combinations, the 64 hexagrams. A hexagram has six lines, still read from bottom to top. Its bottom three lines form the lower trigram, and its top three form the upper trigram.

For example, Qian below Qian forms the six-line Qian hexagram; Kun below Kun forms the Kun hexagram. Traditional line headings commonly use nine for a yang line and six for a yin line, with positions labelled first, second, third, fourth, fifth and top. These labels are not simple good-fortune or bad-fortune scores detached from their text. Different hexagram sequences and interpretive traditions should be identified separately.

Introductory cultural reference, not personal fortune-telling, medical or investment advice. Symbolism expresses a wish, not a guaranteed effect.