ShiPan: BaZi & Zi Wei Casework

BaZi and Zi Wei Dou Shu side by side in one case: fourteen Zi Wei settings per case, immutable revisions, anchored notes, PDF case files and full backups. All on device.

ShiPan is a local casework bench for practitioners of Chinese astrology. It is not a fortune-telling app. It keeps cases, fixes the calculation conventions, produces traceable charts and anchors your reasoning and later feedback to exact positions on the chart.

CASEWORK • Cases with search, pinning and custom fields • Every calculation is an immutable revision with its input, conventions and engine version; changing a convention adds a revision and keeps the old one • BaZi and Zi Wei revision histories side by side; compare any two • Observation, basis, question and verification notes anchored to pillars, luck cycles, years, Zi Wei palaces, stars, decades, patterns and transformations

BAZI • True solar time with longitude and equation-of-time corrections recorded separately; IANA time zones with historical daylight saving • Solar terms compared at the real instant (BaZiCore 1.3.0, overseas births near Li Chun); on upgrade each case gets a new revision with the differences shown • Non-solar-term pillars, a two-source daylight-saving check with a confirmed "minus 1 hour" • Midnight or Zi-hour day change, late Zi hour stem, traditional or minute-precise luck start; luck and year timeline • Longitudes for 484 Chinese cities and districts

ZI WEI DOU SHU • ZiWeiCore engine: a native Swift port of iztro 2.6.4, checked chart by chart against golden vectors • Fourteen settings per case: brightness table, Geng-year transformations, Kui/Yue, Jie Kong, Tian Ma, Tian Kong, Tian Shi/Tian Shang, growth stages, late Zi hour, leap month, chart and horoscope year boundaries, nominal age, clock offset • Professional board: major-star brightness, birth-year transformations, minor stars, the four twelve-god rows, borrowed stars for empty palaces, body palace and decades • Six layers: natal, decade, year, month, day and hour, each with its transformations and moving stars • Flying stars: where any palace stem's four transformations land, self-transformation marks, Lu-on-Lu and Ji-opposite markers • Pattern trace with required, bonus and breaking conditions and sources, plus patterns that are one condition short • Three-directions-four-sides table • Citation panel: classical texts, Ni Haixia's Tian Ji lectures and open dataset lines for the selected palace, each with source and licence, copyable into notes; marked as quotations, not the app's conclusions • Two-case comparison lists structural facts only: life and body palaces, major-star positions, transformations in the other chart, decades in step

EXPORT AND BACKUP • PDF for one case or all cases: BaZi chart, Zi Wei board, settings, pattern trace and notes, with an optional Zi Wei year table • Full local backup with verified restore (reads 1.0 backups)

PRIVACY AND NETWORK • No account, ads, analytics or tracking SDKs; cases stay on the device • No network use by default; only when you tap Check for updates in Settings does ShiPan download public content files from anymk.app

CREDITS Citations include the open Zi Wei Dou Shu reading dataset v4.0 by Wang Duoyu AI, CC BY 4.0: https://github.com/Renhuai123/ziwei-doushu, and quotes from Ni Haixia's Tian Ji under CC BY-NC-SA 4.0. iztro (MIT), ziwei-doushu (MIT), lunar-swift (MIT). Classical texts are in the public domain.

BOUNDARIES ShiPan gives no automatic verdicts on fortune, health, legal or financial matters; pattern and transformation markers are structural checks, not conclusions. Traditional methods cannot promise real-world outcomes. When recording third-party cases, obtain the necessary consent and keep exported files safe.