I Ching：Rules and reading
An I Ching reading builds a six-line hexagram and considers its judgment, line texts and changing lines. AstralNex uses three coins, recorded bottom to top, with an explicit text-selection policy. This differs from Na Jia Six Lines and Plum Blossom methods.
Foundations and calculation
Assign coin faces 2 and 3. Totals 6, 7, 8 and 9 mean changing yin, stable yang, stable yin and changing yang. Only 6 and 9 reverse polarity. The primary hexagram records the original lines; the relating hexagram records the changes. Preserve line order.
Worked example
For bottom-to-top values 7,8,7,8,9,8, only line five changes. Build the original polarity pattern, then reverse that line to obtain the relating hexagram. The selected focus is primary line five, rather than a sentence chosen because it seems agreeable.
Reading and judgment
Zero changes selects the primary judgment; one selects that line; two reads both with upper emphasis; three reads both judgments without ranking them. Four or five reads the unchanged positions in the relating hexagram, with lower emphasis for four. Six reads Use Nine or Use Six for Qian or Kun, otherwise the relating judgment. This is an explicit policy, not universal consensus.
Common mistakes
Read auspicious or adverse language with its conditions and context. A relating hexagram is not a guaranteed future. Recasting until a preferred answer appears weakens the record; importing Na Jia significators changes the method.