[{"data":1,"prerenderedAt":96},["ShallowReactive",2],{"content-topic-chinese-zodiac:en":3},{"topic":4,"articles":39,"tools":90},{"slug":5,"title":6,"eyebrow":7,"description":8,"relatedTools":9,"articleIdeas":11,"seo":16,"sections":20},"chinese-zodiac","Chinese Zodiac","Twelve branches, four animals","The animal is a branch label, and a chart carries four of them. Where the twelve-year count came from, what the year boundary does to it, what the compatibility pairs and fan tai sui actually count, and which of the four animals a reading turns on.",[10],"bazi-four-pillars",[12,13,14,15],"Why There Are Twelve Animals","What Fan Tai Sui Counts","Four Animals in One Chart","The 23:00 Day Boundary",{"title":17,"description":18,"path":19},"Chinese Zodiac: Twelve Branches, Four Animals","Where the twelve-year animal count came from, what the year boundary does to it, what fan tai sui and the compatibility pairs actually count, and which animal a reading turns on.","\u002Ftopics\u002Fchinese-zodiac",[21,24,27,30,33,36],{"heading":22,"body":23},"What the animal is, before it is a personality","生肖 names one of the twelve earthly branches. A birth chart has four pillars and every pillar carries a branch, so a chart carries four animals rather than one — and two of the four are often the same. The animal most people quote is the year branch, and it is quoted because it changes once every twelve years, which makes it the easiest of the four to remember and the least informative of the four to read. Everything else in this topic follows from that: the animal is a position in a count, and the count has a history, a boundary problem, and a set of relations that are exact arithmetic rather than prediction.",{"heading":25,"body":26},"Where the twelve come from","The count is older than the animals. In the Huainanzi the cycle is stated as an observation of Jupiter: the year star moves through the twenty-eight lunar mansions, three in some years and two in others, and closes the circuit in twelve. Jupiter actually takes 11.86 years, so a count tied to its observed position gains about 51 days every cycle and drifts a full station in roughly eighty years. The same chapter supplies the repair — a point that starts at 寅, shifts one station per year in the opposite direction, and completes the circuit in twelve years by definition. That point is 太歲, and because it is defined rather than measured it cannot drift. The animal names were attached to the branches afterwards, and the branches were never Jupiter.",{"heading":28,"body":29},"The boundary problem nobody mentions","A year animal needs a year, and there are two candidates. Chart work changes the year at 立春, the solar term that falls around 4 February. Folk reckoning changes it at the lunar new year, which falls between 21 January and 20 February. In most years the two dates are a week or two apart, and anyone born in that gap has two defensible year animals. This is not a modern confusion: the solar-term year is what the four pillars are built from, and the lunar year is what a calendar prints. Both are correct inside their own convention, and a page that gives one without saying which is not answering the question.",{"heading":31,"body":32},"What people actually ask: compatibility and fan tai sui","Two questions bring almost everyone to this topic. The first is whether two animals go together. The branch relations behind that answer are fixed: 沖 is six stations apart, 合 is a defined pairing, and 刑 and 害 are defined sets, so twelve animals give sixty-six pairs and every pair has an answer. What the answer is worth is a separate matter, and it is settled by counting: a relation between two branches is a statement about two positions, not about two people. The second question is fan tai sui, being told at each new year that you offend the year. That phrase bundles five relations — 值, 沖, 刑, 害, 破 — and their union covers four or five of the twelve branches in any given year. A label that applies to a third of everyone every year cannot pick anyone out of that third. The daily almanac uses the identical twelve branches one level down, where each animal gets thirty-odd clash days a year whatever the year animal is.",{"heading":34,"body":35},"What the animal can and cannot tell you","It tells you a position. Two people born twelve years apart share the year animal, and so does roughly one in twelve of everyone alive, which is the arithmetic that limits what the label can carry. It does not describe a temperament: nothing in a count built to track a planet measures a person. It does not date anything on its own either, because the animal is only the branch half of a sixty-year label and the stem is the half that separates one rat year from another. What a reading actually turns on is the day branch, because the day stem is the Day Master and every other judgement is made relative to it — and the day branch is the one part of a chart that cannot be estimated from a date.",{"heading":37,"body":38},"Where to start, and with what","The four articles in this topic take the four questions in order: why there are twelve, what fan tai sui counts, which of the four animals is being read, and what happens to the day pillar when a birth falls between 23:00 and midnight. The Four Pillars calculator is the live tool that produces all four pillars with their branches, hidden stems and element distribution, so it is the one place to see the four animals of a chart at once rather than guessing the year animal from a birth year. For the day level — which day clashes with which branch — the date-selection tool answers a question that actually varies from day to day.",[40,56,67,79],{"slug":41,"title":42,"description":43,"category":44,"topicSlug":5,"legacyPath":45,"authorId":46,"publishedAt":47,"updatedAt":48,"summary":49,"relatedTools":50,"seo":51},"twelve-year-cycle-jupiter","Why Twelve Animals: Twenty-Eight Mansions Divided by Twelve","The twelve animals sit on a twelve-step count of Jupiter's circuit through twenty-eight mansions. Twenty-eight does not divide evenly by twelve, and the rounding rule that fixes it explains the cycle.","Zodiac","","chen-jun","2026-10-26","2026-10-31","The Huainanzi states the cycle as Jupiter crossing twenty-eight mansions in twelve years, three mansions in some years and two in others. The split is a rounding rule: 28 ÷ 12 is 2.33, and the annual average it produces sits 0.35° away from the planet's actual advance.",[10],{"title":52,"description":53,"path":54,"type":55},"Why Twelve Animals: 28 Mansions Divided by 12","Twenty-eight mansions over twelve years is 2.33 a year, so the count has to round. Here is the rounding rule in the Huainanzi and what it costs in degrees.","\u002Farticles\u002Ftwelve-year-cycle-jupiter","article",{"slug":57,"title":58,"description":59,"category":44,"topicSlug":5,"legacyPath":45,"authorId":46,"publishedAt":47,"updatedAt":60,"summary":61,"relatedTools":62,"seo":63},"tai-sui-and-fan-tai-sui","Fan Tai Sui: Jupiter's Shortfall and the Count Behind It","Tai sui is a bookkeeping point, invented because Jupiter takes 11.862 years, not 12. The five branch relations implicate four or five of twelve every year, and all twelve within a cycle.","2026-10-30","Jupiter gains 0.35° a year on the twelve-part count, so after about 86 years it is a whole station ahead — which is why the year point is fictitious rather than observed. The five relations cover 4.33 of twelve branches on average, and 值 plus 沖 alone catch every person twice in any twelve years.",[10],{"title":64,"description":65,"path":66,"type":55},"Fan Tai Sui: Jupiter's Shortfall and the Count","Tai sui is a position in a twelve-station count, not a planet: Jupiter runs 4.2 degrees short every twelve years. The five relations touch four or five branches, and all twelve within a cycle.","\u002Farticles\u002Ftai-sui-and-fan-tai-sui",{"slug":68,"title":69,"description":70,"category":44,"topicSlug":5,"legacyPath":45,"authorId":71,"publishedAt":47,"updatedAt":72,"summary":73,"relatedTools":74,"seo":75},"four-animals-in-one-chart","Four Animals in One Chart, and What the Count Says","A chart carries four animals, not one. 20,736 four-animal combinations, 42.7% of charts repeating one, and six readable pairs: the arithmetic behind the set.","sun-hao","2026-11-01","Four animals at four change rates. 12^4 = 20,736 combinations put about 395,000 people in each bucket, and adding the stems multiplies the resolution twenty-five-fold. 42.7% of charts repeat an animal, and four branches give six pairs to read.",[10],{"title":76,"description":77,"path":78,"type":55},"Four Animals in One Chart: Resolution, Repeats, Pairs","Four animals, four change rates. How many people share your combination, why 42.7% of charts repeat one, and where the six readable pairs come from.","\u002Farticles\u002Ffour-animals-in-one-chart",{"slug":80,"title":81,"description":82,"category":83,"topicSlug":5,"legacyPath":45,"authorId":71,"publishedAt":47,"updatedAt":60,"summary":84,"relatedTools":85,"seo":86},"late-zi-hour-day-boundary","The 23:00 Boundary: Two Pillars Change, Not One","The 子 hour runs 23:00–01:00, so midnight sits inside it. One convention turns the day at 23:00, the other at midnight — and since the hour stem follows the day stem, both pillars change.","BaZi","On 5 December 2026 the day pillar steps from 癸丑 to 甲寅 at 23:00 and the hour from 癸亥 to 甲子, while the lunar date waits for midnight. Across China the same 23:00 clock minute is 亥 in Beijing, 子 in Shanghai and 戌 in Ürümqi.",[10],{"title":87,"description":88,"path":89,"type":55},"The 23:00 Day Boundary in BaZi: Two Pillars, Not One","子時 spans 23:00 to 01:00, so midnight sits inside it. Two conventions, two day pillars, and because the hour stem follows the day stem, two hour pillars as well.","\u002Farticles\u002Flate-zi-hour-day-boundary",[91],{"slug":10,"title":92,"shortTitle":93,"description":94,"category":83,"status":95},"Four Pillars BaZi Calculator","Four Pillars","Enter a Gregorian birth date and local time to see the four pillars, hidden stems, Ten Gods, Na Yin, branch relations, and element counts, with clear calendar and time-boundary limits.","live",1793614149338]