BaZi · Glossary
Xuankong Flying Stars — the System and Its Nine Periods
Deep Oracle Editorial Team · 2026-07-27 · 1 min read
Xuankong Flying Stars is a major school of feng shui that uses the Luoshu nine-palace grid as its frame and "flies" the nine stars through the palaces on the rhythm of the Three Cycles Nine Periods, reading the strength of each palace from the resulting star combinations.
The nine stars and the periods
The nine stars — 1 White Tan Lang through 9 Purple You Bi — take turns governing, one per 20-year period. The governing star of the current period is called the "period star" and its qi is considered the most prosperous. From 2024 to 2043 (Period 9), the Nine Purple You Bi star governs; the previous governor, 8 White Zuo Fu (2004–2023), is in retreat.
Scope of this entry
This entry explains the terminology and the period mechanism only. Plotting a property's star chart, orientation and siting are feng-shui practice, outside the scope of a BaZi reference.
Sources
The system was consolidated in Qing-dynasty xuankong texts, with Shen Shi Xuan Kong Xue the representative compilation.
FAQ
How do the Flying Stars relate to the Nine Periods?
The Nine Periods are the Flying Stars' clock: each period seats a different governing star, and when periods change, the whole distribution of prosperous and retreating stars is re-read.
Related terms
Three Cycles Nine Periods · Nine Palaces & Luoshu · Yuan Yun
In the classical texts
Passages in the classical texts held on this site where the term occurs, transcribed from the named edition. The texts do not necessarily use the term the way it is used today.
权大吉余仿此同室操戈必招祸变如立命在子不问主星但有水火同垣金木同位虽彼自相战尅与命宫不相干终是窘我室庐祸起萧墙之内也飞星破驾终是废人凡论命必殿驾为先假如甲辰生岁驾在辰金为驾主辰酉立命金为命主若有火罗飞入辰宫乃为害曜破驾必贱人也余仿此刼杀抗冲威烈以怒如壬子生人命在巳乃的杀之地更有刑土之星于其上是
言物之造作，非由我之宰主所为，其造化之理，自然玄空相应，而自然造作也。
甲科名居其上方曰登殿第一要身命临之次则福禄主临之入此格局皆贵命也若殿中无星有身命二主日月福禄主星禄马官魁拱之尤主大贵茍被飞星迁其上兼囚煞加临则曰客曜临朝飞星破殿不为福也如有主星处其上又为煞星客曜混杂刑尅纵主功名富贵不惟艰辛亦难久享夫岁殿者乃天上太岁之尊人命十干之首言曜临之畴非富贵凶曜临之必皆贫贱殿者
或吉为凶神所恼，凶为吉神所临，刑害可知，宜加详审，故有十忌：一忌飞星破禄；
九四十五，若自上而下亦如之，凡八十一易之步九宫，自一起亦八十一步，是以阳起一终九，故一六、二七、三八、四九、五十居中，此玄空之奥，秘中秘。
玄空大卦神仙说，本是此经诀。
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