BAZI KNOWLEDGE BASE
Corner Separation Sha: directions, differing sources and examples
Corner Separation (Ge Jiao, 隔角) appears in historical discussions of directional transitions and solitude markers. One passage concerns four corners and Gu Chen/Gua Su; another gives Chou–Mao day-hour examples. A clear explanation identifies the text and reference rather than deriving a formula from the everyday word corner.
What do the two source passages actually say?
The Gu Chen/Gua Su passage in Sanming Tonghui, volume 3, discusses Yin, Shen, Si and Hai as corners, with Chen, Xu, Chou and Wei as separated positions. It also explains the Gen direction between Chou and Yin.
The Luo Lu Zi San Ming Xiao Xi Fu commentary instead gives Mao day/Chou hour and Chou day/Mao hour, describing northern and eastern qi. These are separately located examples, not one complete universal formula.
| Source context | Explicit illustration | Not established by it |
|---|---|---|
| Gu Chen/Gua Su passage | Chou–Yin and Gen | Every neighboring pair is Corner Separation |
| Luo Lu Zi commentary | Mao day/Chou hour and the reverse | Chou/Mao anywhere in the pillars always qualifies |
Does Year Chou with Month Mao equal Mao day with Chou hour?
No. The characters may be the same, but their positions differ. Under a day-hour example, year and month positions cannot substitute for day and hour.
Chou and Yin being adjacent in another passage also does not establish Zi–Chou or Yin–Mao as additional matches. Without a complete rule, retain the documented examples instead of extending them indefinitely.
A directional name is not a family fact
The association between directional boundaries and separation belongs to historical interpretation. It does not establish estrangement, divorce, bereavement or filial conduct; those concern actual relationships and circumstances.
Clarify does not calculate Corner Separation. When a report uses the term, first identify its rule instead of interpreting every family experience through separation.