Eight Mansions (Ba Zhai) East/West Four Life types, eight-mansion directions, and auspicious/inauspicious position analysis. Eight Mansions Door Position: The Front Door Is the Soul of Eight Mansions — Door Luck for All Eight House Trigrams, Strategies for Doors on Lucky and Unlucky Directions, Three Rescue Plans for Doors on Unlucky Directions, Complete Door Position Guide for Building Entry, Unit Door, and Interior Doors The ultimate Eight Mansions door position guide — how the front door's direction (by the Eight Trigrams) affects the entire house's luck, reference tables for the best and worst door positions for all eight house trigrams, three rescue plans when the door sits on an unlucky direction (entryway airflow redirection, Five Element affliction remedy, door angle micro-adjustment), plus the full door system: building entry door, unit door, and interior doors. The door is the Qi inlet. Door position determines 60% of the home's overall Qi luck. Eight Mansions Four Lucky Directions Explained: Sheng Qi for Career and Wealth, Yan Nian for Marriage and Relationships, Tian Yi for Health and Recovery, Fu Wei for Stability and Foundation Complete breakdown of the Eight Mansions Four Lucky Directions — Sheng Qi (the number one career and wealth direction) with directional calculation, Five Element attributes, best functional uses, and layout taboos. Yan Nian (marriage and relationships) with positioning and activation tips. Tian Yi (health and recovery) with Five Element matching and dos-and-donts. Fu Wei (stability and foundation) with activation strategies to prevent stagnation. Includes the Great Wandering Star chant, quick-reference tables for all eight house trigrams, and layout case studies. Eight Mansions Four Unlucky Directions Explained: Jue Ming Disaster Resolution, Wu Gui Gossip and Fire Danger, Liu Sha Romance Troubles, Huo Hai Chronic Illness and Quarrels — Complete Guide to Using Unlucky Directions Wisely Complete breakdown of the Eight Mansions Four Unlucky Directions — Jue Ming (the most dangerous direction) with directional identification, Five Element clash mechanism, absolute no-gos, and the only correct way to use it. Wu Gui (gossip, lawsuits, and fire danger) with Five Element roots and Metal-based remedies. Liu Sha (romance affliction and relationship disputes) with activation threshold control and different approaches for married vs single. Huo Hai (chronic drain and petty quarrels) with heavy-element suppression. Core message: don't leave unlucky directions empty waiting for trouble — use them, but use them by the rules. Eight Mansions in Modern Apartments: High-Rise Sitting Direction Judgment, Building Entry vs Unit Door Direction Dynamics, Floor Number Five Element Matching, Small Apartment Missing Corner Adjustments, Renter Optimization Without Structural Changes Practical application guide for Eight Mansions feng shui in modern city apartments — how to accurately determine the sitting direction of high-rise apartments (whole building vs individual unit, pros and cons of each method), coordination and conflict handling between building entry door direction and unit door direction, the Five Element attributes of floor numbers and matching rules with Eight Mansions life trigrams, adjustment techniques for small apartments with missing corners (virtual fill method + furniture positioning method), plus Eight Mansions optimization thinking for renters who cannot modify rigid structures. East-West Four Life Precision Calculation: Formula Differences for Pre-2000 vs. Post-2000 Births, Remainder-to-Trigram Complete Table, Four Lucky and Four Unlucky Direction Lists for Each Life Trigram, Common Calculation Errors, and Deep Daily-Life Applications A complete breakdown of the East-West Four Life calculation — side-by-side comparison of the classic formula for 1900-1999 births and the revised formula for births from 2000 onward, the full remainder-to-trigram mapping table (including the special male-5 and female-5 rules), ready-to-use lists of the four lucky and four unlucky directions for all eight life trigrams, the five most common calculation mistakes with corrections, and deep daily-life applications of your life trigram (choosing a home, choosing a floor, choosing business partners). This is the ultimate reference manual for Eight Mansions life trigram calculation.