Tradition & Origins
Hai 亥 — Branch 12
Hai 亥 is the 12th Earthly Branch in the conventional twelve-part sequence. It follows Dog and precedes Rat before the full cycle eventually returns to Rat. Lun Heng uses the older character 豕 in the cited passage. SAGE uses the familiar modern display 豬 and the English label Pig.
Water — 水
In SAGE's standard Earthly Branch correspondence table, Hai 亥 carries the branch-primary element Water 水. This should not be confused with the Heavenly Stem element of a particular Pig year. Across the sixty-year stem-branch cycle, Pig years can occur with Wood, Fire, Earth, Metal, or Water Heavenly Stems while the branch-primary association remains Water.
Yin Polarity
Hai is conventionally treated as a Yin branch. SAGE presents that as a structural branch correspondence, not as a claim that every person born in a Pig year behaves in a uniformly yin way.
Branch Hours
Hai also labels the traditional two-hour branch period approximately 9:00 PM–11:00 PM. This is a calendar/time correspondence and is not used as evidence that every Pig person behaves a particular way during those hours.
Historical Context
Lun Heng's Wu Shi explicitly identifies Hai 亥 as Water and pairs it with 豕, the pig. Alfred Forke later devoted an appendix of his public-domain study of Lun Heng to the Cycle of the Twelve Animals. Material evidence also survives: the Metropolitan Museum of Art preserves a Qing-dynasty jade set representing the complete twelve-animal zodiac. Together these sources support the historical presence of the cycle without requiring SAGE to turn later personality descriptions into ancient facts.
Pig in the Cultural Imagination
The pig's grounded physical presence and direct engagement with food, rest, and environment provide symbolic material for receptivity, persistence, comfort, and uncomplicated enjoyment. SAGE keeps that symbolism separate from historical calendrical fact. These associations belong to the SAGE symbolic layer; they are not being presented as personality traits proven by the ancient calendrical texts.
The Great Race
In the widely told modern form of the Great Race legend, the Pig occupies the 12th place in the familiar twelve-animal sequence. SAGE treats that story as popular zodiac folklore rather than claiming it is the historical origin demonstrated by Lun Heng.
Surviving Zodiac Art
The Metropolitan Museum of Art's Qing-dynasty jade set preserves the full twelve-animal group, including the Pig. That physical evidence demonstrates zodiac imagery in Chinese material culture; it does not establish a list of personality traits for people born in that year.