Word origin · etymology
Romanized Chinese calendrical name Mao (卯), ordinal 4.
Historical character derivation is not established by the cited calendar tables.
How we know · epistemology
Calendrical convention
Branch ordinal, animal and hour range are calendrical mappings, not traits.
Connected concepts
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These links connect subjects and terminology. They do not establish a shared historical origin.
Sources & provenance
Use the citations beside each section to distinguish a calculation convention, a historical teaching and an editorial example.