
There are many books about Wu Hang Yi or Han Yi in Chinese and also in Japanese.
It is used as a backbone in other seberal oracles.
In Wu Hang Yi method, each Trigram is related with one of the attributes of Wu Hang like following:

'Gu' is return. 'Hun' is where the spirit exists. 'Gua' means Hexagram.
So it means the Hexagram which tells us it's time to consider to return
to the way we really desire. There are eight Hexagrams for Gu Hun Gua.
'You' is absence. So 'You Hun Gua' means the body exsists here but the
mind is anywhere else. When we get one of them, we must consider about
possibility that the client must keep something important from sight.
Every Hexagram has one elements of Wu Hang, such as Wood, Fire, Earth,
Metal and Water, and belongs to Trigram Family. Each Trigram Family
consists of eight Hexagrams, and we call this 'Eight Trigram Houses'.
In each Trigram Familys see below.
| House | Hexagram Numbers of Members | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Generations | |||||||||
| Origin | 1st | 2nd | 3rd | 4th | 5th | You Hun | Gu Hun | ||
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1 ----- ----- ----- ----- ----- ----- |
44 ----- ----- ----- ----- ----- -- -- |
33 ----- ----- ----- ----- -- -- -- -- |
12 ----- ----- ----- -- -- -- -- -- -- |
20 ----- ----- -- -- -- -- -- -- -- -- |
23 ----- -- -- -- -- -- -- -- -- -- -- |
35 ----- -- -- ----- -- -- -- -- -- -- |
14 ----- -- -- ----- ----- ----- ----- | |
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58 -- -- ----- ----- -- -- ----- ----- |
47 -- -- ----- ----- -- -- ----- -- -- |
45 -- -- ----- ----- -- -- -- -- -- -- |
31 -- -- ----- ----- ----- -- -- -- -- |
39 -- -- ----- -- -- ----- -- -- -- -- |
19 -- -- -- -- -- -- ----- -- -- -- -- |
62 -- -- -- -- ----- ----- -- -- -- -- |
54 -- -- -- -- ----- -- -- ----- ----- | |
![]() (Fire) |
30 ----- -- -- ----- ----- -- -- ----- |
56 ----- -- -- ----- ----- -- -- -- -- |
50 ----- -- -- ----- ----- ----- -- -- |
64 ----- -- -- ----- -- -- ----- -- -- |
4 ----- -- -- -- -- -- -- ----- -- -- |
59 ----- ----- -- -- -- -- ----- -- -- |
6 ----- ----- ----- -- -- ----- -- -- |
13 ----- ----- ----- ----- -- -- ----- | |
![]() (Wood) |
51 -- -- -- -- ----- -- -- -- -- ----- |
16 -- -- -- -- ----- -- -- -- -- -- -- |
40 -- -- -- -- ----- -- -- ----- -- -- |
32 -- -- -- -- ----- ----- ----- -- -- |
46 -- -- -- -- -- -- ----- ----- -- -- |
48 -- -- ----- -- -- ----- ----- -- -- |
28 -- -- ----- ----- ----- ----- -- -- |
17 -- -- ----- ----- -- -- -- -- ----- | |
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57 ----- ----- -- -- ----- ----- -- -- |
9 ----- ----- -- -- ----- ----- ----- |
37 ----- ----- -- -- ----- -- -- ----- |
42 ----- ----- -- -- -- -- -- -- ----- |
25 ----- ----- ----- -- -- -- -- ----- |
21 ----- -- -- ----- -- -- -- -- ----- |
27 ----- -- -- -- -- -- -- -- -- ----- |
18 ----- -- -- -- -- ----- ----- -- -- | |
![]() (Water) |
29 -- -- ----- -- -- -- -- ----- -- -- |
60 -- -- ----- -- -- -- -- ----- ----- |
3 -- -- ----- -- -- -- -- -- -- ----- |
63 -- -- ----- -- -- ----- -- -- ----- |
49 -- -- ----- ----- ----- -- -- ----- |
55 -- -- -- -- ----- ----- -- -- ----- |
36 -- -- -- -- -- -- ----- -- -- ----- |
7 -- -- -- -- -- -- -- -- ----- -- -- | |
![]() (Earth) |
52 ----- -- -- -- -- ----- -- -- -- -- |
22 ----- -- -- -- -- ----- -- -- ----- |
26 ----- -- -- -- -- ----- ----- ----- |
41 ----- -- -- -- -- -- -- ----- ----- |
38 ----- -- -- ----- -- -- ----- ----- |
10 ----- ----- ----- -- -- ----- ----- |
61 ----- ----- -- -- -- -- ----- ----- |
53 ----- ----- -- -- ----- -- -- -- -- | |
![]() (Earth) |
2 -- -- -- -- -- -- -- -- -- -- -- -- |
24 -- -- -- -- -- -- -- -- -- -- ----- |
19 -- -- -- -- -- -- -- -- ----- ----- |
11 -- -- -- -- -- -- ----- ----- ----- |
34 -- -- -- -- ----- ----- ----- ----- |
43 -- -- ----- ----- ----- ----- ----- |
5 -- -- ----- -- -- ----- ----- ----- |
8 -- -- ----- -- -- -- -- -- -- -- -- | |
Stems are positioned on Trigrams. Each lines of Trigrams has the same Stem.
However, some Trigrams have different Stems in the case of different position(upper or lower)
of the Hexagram.
| Position of Hexagram | ![]() |
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|---|---|---|---|---|---|---|---|---|
| Upper | ![]() |
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| Lower | ![]() |
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Branches are positioned on each lines of Trigrams.
| Position of Hexagram | ![]() |
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|---|---|---|---|---|---|---|---|---|
| Top | ![]() |
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| 5th | ![]() |
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| 4th | ![]() |
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| 3th | ![]() |
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| 2nd | ![]() |
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| 1st | ![]() |
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