"TianGan DiZhi", describes "ganzhi jifa" or "stem-branch recording method". It is used to record the years, months, days and hours in Ancient China. 60 basic unites are formed out of "ten heavenly stems" combined with "twelve earthly branches".
Since China has converted to the Christian way of numbering the years, the "stem-branch" numbering can now-a-days mainly be found in Ancient Chinese arts such as astrology, feng shui and divination.
Picture: 24 cardinal directions
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