Six hexagram divination or three hexagram divination?

Six hexagrams can not only refer to the combination of six yin and yang symbols arranged from bottom to top, but also refer to the method of divination by borrowing this combination.

3. The original meaning of Yi is "intersection" and "effect", which is vertical and horizontal intersection, and yin and yang intersection. "Effect" is the "utility" produced by "intersection", which can be measured by global calculation and has different interpretations according to different methods, systems and positioning.

4. The bottom symbol is called "the first symbol" and the top symbol is called "the symbol above", among which, from bottom to top, there are two symbols with three and four fives. Yang Yao'-'(a long horizontal line) is also called' nine', and Yin Yao'-'(two short horizontal lines with a space in the middle) is also called' six'. If the first day is Yang Yao, then the first day can also be called' Nine Days'. If "applying medicine" is yin medicine, then "applying medicine" can also be said to be "still flowing".

5. Add two or three hexagrams at the beginning to form a "hexagram", which is called "inner hexagram" or "lower hexagram"; Four or five hexagrams plus six hexagrams form another kind of hexagrams, also called "external hexagrams" and "upper hexagrams".