The Ziping Sect (子平派) — Classical Foundations
The Ziping Sect (子平派) is the mainstream classical methodology of BaZi, named after Xu Ziping (徐子平), a Tang–Song dynasty master who transformed the art from a Year-Pillar-centric system into one that places the Day Master (日主) — the Heavenly Stem of the birth day — at the centre of all analysis. This revolution is recorded in the Yuan Hai Zi Ping (淵海子平) compiled by Xu Da Sheng.
The Pre-Ziping Method: Li Xuzhong's Year-Based System
Before Xu Ziping, the dominant method was the Li Xuzhong system (李虛中命書), which used the Year Pillar as the primary indicator of fate. The Year Stem was the "Self." This meant two individuals born in the same year shared the same fundamental fate structure. Xu Ziping's insight was that the Day Stem — unique to each individual within a given year — was the true locus of personal identity. This shifted BaZi from a generational descriptor to an individual destiny map.
The Month Decree as Root (月令司令)
The single most important structural principle in Ziping methodology is: the Month Branch (月令) is the root of all analysis. The Month Branch determines the dominant seasonal Qi, which activates one or more of the hidden stems within itself. The dominant hidden stem, assessed as a Ten God relative to the Day Master, names the chart's Chart Structure (格局 Ge Ju).
Classical formulation from Zi Ping Zhen Quan: "提綱有用提綱重" — "When the Month Command yields a Useful God, the Month Command takes priority over all other considerations."
The hidden stems within each branch (藏干) operate at different depths depending on the solar term. In the month of Yin (寅), the three hidden stems are Wu Earth (戊, Residual Qi), Bing Fire (丙, Middle Qi), and Jia Wood (甲, Main Qi). Which hidden stem has been activated by the specific day within the month determines the precise chart structure. This is the Sima Tou Jia (司馬頭甲) calculation.
The Eight Standard Structures (八格)
The Zi Ping Zhen Quan establishes eight standard chart structures, each named for the Ten God that the Month Branch's dominant hidden stem represents:
| Structure | Chinese | Month Branch Examples | Core Quality |
|---|---|---|---|
| Direct Officer | 正官格 | Hai (for Wood DM), Si (for Metal DM) | Authority, ethics, governance |
| Seven Killings | 七殺格 | Yin (for Earth DM), Shen (for Wood DM) | Power, military, pressure-converted-to-achievement |
| Direct Wealth | 正財格 | Xu (for Fire DM), Chen (for Water DM) | Steady assets, disciplined business |
| Indirect Wealth | 偏財格 | Mao (for Earth DM), You (for Wood DM) | Windfalls, entrepreneurship |
| Food God | 食神格 | Chen (for Metal DM), Yin (for Water DM) | Creativity, health, quality of life |
| Hurting Officer | 傷官格 | Xu (for Metal DM), Si (for Wood DM) | Intelligence, artistry, unconventional achievement |
| Direct Seal | 正印格 | Hai (for Earth DM), Si (for Water DM) | Knowledge, protection, institutional backing |
| Indirect Seal | 偏印格 | Shen (for Fire DM), Zi (for Metal DM) | Esoteric wisdom, specialised expertise |
Yong Shen — The Useful God (用神)
Once the Chart Structure is identified, the Ziping method determines the Yong Shen (用神) — the element that is most essential to the chart's functioning. In Zi Ping Zhen Quan, the Yong Shen is typically the element that completes or supports the Chart Structure:
- For a Direct Officer chart: the Officer element itself is the structure; Wealth (which generates the Officer) and Seal (which the Officer generates to protect the Day Master) are the Yong Shen candidates.
- For a Seven Killings chart: the element that controls the Killings (Food God in Food-controls-Killings structures) or the Seal (which transforms Killings' pressure into Resource for the Day Master) is the Yong Shen.
- The Xi Shen (喜神) supports the Yong Shen. The Ji Shen (忌神) blocks or attacks the Yong Shen.
The Yong Shen vs Tiao Hou Debate (用神與調候之爭)
A persistent theoretical tension exists between two schools of Yong Shen determination:
- Structure-First (格局法): Advocated in Zi Ping Zhen Quan — derive Yong Shen from Chart Structure (Month Decree). The Day Master's "strength" (strong/weak) is secondary to whether the structure is complete and functioning.
- Seasonal Adjustment-First (調候法): From Qiong Tong Bao Jian (窮通寶鑒) — the Day Master's seasonal needs (warmth, moisture, cooling) determine the primary Yong Shen. A Jia Wood Day Master born in deep winter requires Bing Fire (warmth) and Gui Water (moisture) above all other structural considerations, because without these the "tree" cannot survive, let alone function as a structure.
Classical master Xu Leshi (徐樂吾) synthesised both: "Determine structure first (格局), then confirm with seasonal adjustment (調候)." If both methods point to the same Yong Shen element, the determination is doubly confirmed. This integrated approach is the mainstream practice of serious modern Ziping practitioners.
Classical to Modern Lineage Transmission
The Ziping methodology was transmitted through a clear lineage of textual scholarship and masters:
- Tang–Song Era: Xu Ziping's oral teaching was codified in Yuan Hai Zi Ping by Xu Da Sheng. The Qing dynasty text Zi Ping Zhen Quan (1779) by Shen Xiao Zhan (沈孝瞻) is the definitive technical statement of the classical method.
- Late Qing through Republic Era: Xu Leshi (徐樂吾), Wei Qianli (韋千里), and Yuan Shu Shan (袁樹珊) systematised the classical texts and added extensive case libraries. Their annotated editions of the classical texts remain essential reference works.
- Taiwan and Hong Kong (20th century): The methodology was preserved and developed in academic and practitioner communities. Key figures include Zhang Yaowen (張耀文) and later the Singapore–Malaysia diaspora.
- Contemporary English-language transmission: Joey Yap, Raymond Lo, and Master Sean Chan have brought Ziping methodology to international audiences, making classical chart structure analysis accessible in English for the first time at scale.
Why Ziping Matters for the Serious Student
Understanding Ziping methodology is not optional for any serious BaZi practitioner — it is the classical standard. Many popular modern approaches teach "Day Master strength" (日主強弱) as the primary analytical tool, which Zi Ping Zhen Quan explicitly subordinates to Chart Structure. The Ziping practitioner can assess any chart with structural precision; the "strong/weak Day Master" approach produces the oversimplifications that Ziping corrects. Begin with Ziping, and other schools' innovations will make sense as extensions or alternatives to this foundation.