Nine Star Mountains (九星山形) — Tan Lang Classification System
The Nine Star Mountain Classification (九星山形) is a Form School system that maps the physical shapes of surrounding hills and mountains to the nine stars of the Luoshu, revealing their elemental nature and auspiciousness as guardian formations. The system is named after the primary star Tan Lang (貪狼 Star 1) — the most auspicious mountain shape.
The Nine Star Mountain Shapes
- 1. 貪狼 (Tan Lang — Greedy Wolf): Tall, rounded, conical hill. Water element. The most auspicious form — produces wealth, literary talent, and noble descendants. The Green Dragon ideal.
- 2. 巨門 (Ju Men — Huge Gate): Flat-topped rectangular mountain. Earth element. Good for officialdom, steady authority, and stability.
- 3. 禄存 (Lu Cun — Prosperity Star): Undulating, irregular ridgeline with multiple peaks. Earth element. Difficult to harness; requires careful sitting point selection.
- 4. 文曲 (Wen Qu — Literary Star): Wavy, serpentine ridgeline. Water element. Good for academic talent and artistic careers; can indicate unstable wealth if not properly contained.
- 5. 廉貞 (Lian Zhen — Virtuous Constancy): Jagged, rocky, fire-shaped peaks. Fire element. Dangerous when in the wrong position; excellent when properly subdued as back mountain.
- 6. 武曲 (Wu Qu — Martial Star): Semi-circular, dome-shaped. Metal element. Excellent for military, law enforcement, and financial sector. The most auspicious Metal form.
- 7. 破軍 (Po Jun — Army Destroyer): Slanting, knife-edged ridge. Metal element. Generally inauspicious as a guardian — creates conflict and financial disruption.
- 8. 左輔 (Zuo Fu — Left Assistant): Small, gentle, supportive hill. Earth element. Auspicious when flanking the main Tan Lang peak as a supporting formation.
- 9. 右弼 (You Bi — Right Assistant): Very flat or barely visible rise. Metal element. Often invisible in the landscape; its effects are subtle but persistent.
The Three Auspicious Stars (三吉) and Six Beautiful Peaks (六秀)
The classical formula identifies the most auspicious mountain combinations: Three Auspicious (三吉) = Tan Lang (1) + Ju Men (2) + Wu Qu (6). Six Beautiful (六秀) = positions 1, 2, 4, 6, 8, 9 — all non-earth destructive forms.
Practical Mountain Reading
In field assessment, mountains are classified from all eight compass directions around the site. The four guardian positions (left dragon, right tiger, front phoenix, back tortoise) each receive a star classification. The ideal site has Tan Lang or Wu Qu at the back, Tan Lang at the sides, and a gentle Ju Men or open Bright Hall in front.