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Calculation method

In Chinese metaphysics many rules come in school variants: where the day boundary falls, which hidden stems a branch holds, how the strength of the Day Master is judged, which palace takes the centre of a Qi Men chart. The BaziArt engine makes one choice at every such point, and this page lists every choice where the canon allows a different reading: what is implemented and why. These are the same rules the app uses to write “why I see this” next to every rating. The page is written for practitioners: terms are given in the original with pinyin. The weights, coefficients, thresholds and scores are part of the author's method and are not given here.

It describes how the system calculates, not what follows from it for a person: in this system a period or an hour is considered favourable or calling for care, and the decision stays with you.

Time and calendar

BaZi (八字)

Hidden stems (藏干, cánggān)

The main table follows the 人元司令 (rényuán sīlìng) school with residual stems: 子 — 癸壬, 卯 — 乙甲, 午 — 丁丙己, 酉 — 辛庚, 亥 — 壬甲戊. The canonical “one-two-three stems” table (子 — 癸, 卯 — 乙, 午 — 丁己, 酉 — 辛, 亥 — 壬甲) is known and considered as a variant; the engine version a chart was calculated with is stored in the chart itself.

Day Master strength (日主, rìzhǔ)

Two methods, then their reconciliation.

Classical — the three traditional criteria. 得令 (délìng), obtaining the season: the relation of the ruling stem of the month (司令, sīlìng) to the Day Master's element. 得地 (dédì), obtaining the ground: a root (根, gēn) — the same element among the hidden stems of any of the four pillars, or a seasonal (方), triangular (三合) or paired (六合) union of branches that yields that element; the resource does not count as a root, or the criterion would merge with the first. 得势 (déshì), obtaining power: supporting open stems of the year, month and hour outnumber the weakening ones; the Day Master itself is not counted.

Dynamic — the share of the Day Master's own element and its resource element in a weighted balance: every open and hidden stem enters with a weight by its position in the pillar, multiplied by the seasonal coefficient of its element for the month branch (the 旺相休囚死, wàng xiāng xiū qiú sǐ matrix). The weights, coefficients and thresholds are part of the author's method and are not given here.

Reconciliation. When the methods agree, that is the verdict. When they disagree, the classical one decides: the month command and the roots weigh more than flat shares; the dynamic one prevails only at extreme values. Without the hour of birth the assessment uses three pillars, and the chart says in how many of the possible hours the verdict holds.

The “Element balance” bar on the chart is a different thing: a plain count of signs, where every open stem and every branch gives one point to its element (for a branch, the element of its main hidden stem); with the hour unknown, the hour pillar is not counted.

Stars and interactions

Qi Men Dun Jia (奇门遁甲)

Planner

For an hour and a task the planner rates each of the eight outer palaces and takes the best one.

Signs that exclude a palace for the hour: 五不遇時 (wǔ bù yù shí) of the hour itself; the void of the hour on the target palace; the door pressing on the palace — 門迫 (ménpò); 擊刑 or 入墓 on the palace; for tasks that require movement, all eight doors in 伏吟 or 反吟; for tasks that require quiet, 白虎 or 玄武 on the palace.

Signs in favour of a palace: the good doors in a 義 or 和 relation to the palace, the three wonders 乙, 丙, 丁 on the Heaven plate, the spirit for the task, favourable structures. Their weights, and the threshold from which an hour counts as favourable in this system, are part of the author's method and are not given here; every window in the app names the signs that went into it.

Double hours follow the sun, and the windows are shown on the device's clock. If no city for time calculations is set, the longitude of the place is unknown: solar time is taken by the zone's meridian without daylight saving, so in summer the windows sit one hour later on the clock: 00:00–02:00 instead of 23:00–01:00. If a city is set, the windows follow that city's sun to the minute: in Madrid in summer 辰 runs from 09:21 to 11:21. The “Zone time” standard in the calculation settings keeps the windows on even hours all year.

Where to see it in the app

Every rating in the app opens “why I see this”: the rule in a plain and an expert register, with its source. The classical texts and this document are collected under Profile → Sources. You can calculate a chart on the site as well; everything else the app does is on the Features page.

A tool for self-reflection and planning, not a forecast of the future: it does not diagnose and does not replace a doctor, a lawyer or a financial adviser.