I Ching Oracle Lookup - Hexagram 18: Correction of Decay

Welcome to Hexagram 18, Correction of Decay. The table below maps every combination of changing lines to its resulting hexagram — 63 transformations plus the unchanging reading. The notation reads from the bottom line upward: 18.1.5 means Hexagram 18 with lines 1 and 5 changing.

䷑ 18	䷑ 18.1 26	䷑ 18.2 52	䷑ 18.3 4	䷑ 18.4 50	䷑ 18.5 57	䷑ 18.6 46	䷑ 18.1.2 22
䷑ 18.1.3 41	䷑ 18.1.4 14	䷑ 18.1.5 9	䷑ 18.1.6 11	䷑ 18.2.3 23	䷑ 18.2.4 56	䷑ 18.2.5 53	䷑ 18.2.6 15
䷑ 18.3.4 64	䷑ 18.3.5 59	䷑ 18.3.6 7	䷑ 18.4.5 44	䷑ 18.4.6 32	䷑ 18.5.6 48	䷑ 18.1.2.3 27	䷑ 18.1.2.4 30
䷑ 18.1.2.5 37	䷑ 18.1.2.6 36	䷑ 18.1.3.4 38	䷑ 18.1.3.5 61	䷑ 18.1.3.6 19	䷑ 18.1.4.5 1	䷑ 18.1.4.6 34	䷑ 18.1.5.6 5
䷑ 18.2.3.4 35	䷑ 18.2.3.5 20	䷑ 18.2.3.6 2	䷑ 18.2.4.5 33	䷑ 18.2.4.6 62	䷑ 18.2.5.6 39	䷑ 18.3.4.5 6	䷑ 18.3.4.6 40
䷑ 18.3.5.6 29	䷑ 18.4.5.6 28	䷑ 18.1.2.3.4 21	䷑ 18.1.2.3.5 42	䷑ 18.1.2.3.6 24	䷑ 18.1.2.4.5 13	䷑ 18.1.2.4.6 55	䷑ 18.1.2.5.6 63
䷑ 18.1.3.4.5 10	䷑ 18.1.3.4.6 54	䷑ 18.1.3.5.6 60	䷑ 18.1.4.5.6 43	䷑ 18.2.3.4.5 12	䷑ 18.2.3.4.6 16	䷑ 18.2.3.5.6 8	䷑ 18.2.4.5.6 31
䷑ 18.3.4.5.6 47	䷑ 18.1.2.3.4.5 25	䷑ 18.1.2.3.4.6 51	䷑ 18.1.2.3.5.6 3	䷑ 18.1.2.4.5.6 49	䷑ 18.1.3.4.5.6 58	䷑ 18.2.3.4.5.6 45	䷑ 18.1.2.3.4.5.6 17

About the Transformations of Hexagram 18

Hexagram 18, Correction of Decay (蠱 Gǔ), combines Wind below with Mountain above. Wind gives the lower three lines a penetrating structure, while Mountain establishes stillness in the upper half. Low-position changes modify the figure's underlying pattern of gradual entry; high-position changes reconstruct its upper boundary. Multi-line movement across the midpoint changes both components and the relation between penetration below and containment above.

The table treats a changing line as a polarity reversal. After every designated line has inverted, the recomposed figure resolves into another hexagram. Its rows contain six single-line transformations and fifty-seven multi-line combinations, including the complete six-line change. An additional unchanging entry records the absence of movement, in which the Judgment of Hexagram 18 alone governs and no second figure is formed.

Full line reversal converts Correction of Decay into Hexagram 17, Following, its exact complement. Hexagram 17 is also its partner in the received King Wen sequence, joined by inversion. Rotating Hexagram 18 from top to bottom reproduces Following's pattern. The two operations therefore arrive at the same adjacent figure in this case: one reverses every line's polarity, while the other reverses the vertical order of the original lines.

For the full Judgment, Image, and line texts, see Hexagram 18: Correction of Decay →