论限起天干、论运行得数、论运行反背、论运行吉凶-卷五

原文

论限起天干
但将遁月歌诀起天干，如甲生人子上安命。将甲己之年起丙寅，数至子上，是丙子同门丑限，是丁丑顺去。其
余仿此。

论运行得数
火行寅午共蛇乡，金逢双女酉申良。
木到亥宫寅卯位，水土申亥子奇方。

论运行反背
火行戌亥便为灾，水土龙蛇忌有衰。金遇丑寅须有否，本行申酉最为乖。

论运行吉凶
亨通显达逢生旺，遁遇屯危遇并冲。此是郊伤生死诀，吉凶消息在其中。
生旺发来墓绝死，墓绝发来生旺终。

译文

On Determining the Heavenly Stem of the Limit, On the Favorable Phases of Movement, On the Reversal of Movement, On the Auspicious and Inauspicious Phases of Movement - Volume 5

Overall Translation
This chapter systematically explains the rules for calculating the major life cycles (大运) and judging their auspiciousness or inauspiciousness. It includes the method of deriving the heavenly stem for the cycles, the phases where the Five Elements are in their prime, the unfavorable reversal phases, and the cyclical patterns of prosperity and decline through the stages of growth, prosperity, decay, and extinction. The heavenly stems for the cycles are determined through songs for calculating the month stems, combined with the prosperity and decline positions of the Five Elements in the twelve palaces, to accurately assess the favorable and challenging trends in various life stages 🌊🔥🌳.

🧩 On Determining the Heavenly Stem of the Limit

Overall Translation
The heavenly stem for the major life cycles must be calculated using the "Song for Calculating the Month Stems." For example, for a person born on a day with the heavenly stem 甲 (Jia), if the life palace is in the 子 (Zi) position, start from the year with the stem 甲 or 己 (Jia or Ji) and begin with 丙寅 (Bing Yin). Count sequentially to the 子 position to obtain 丙子 (Bing Zi). The subsequent cycles follow in order: the 丑 (Chou) cycle is 丁丑 (Ding Chou), the 寅 (Yin) cycle is 戊寅 (Wu Yin), and so on. The same rule applies to other day stems.

Modern Interpretation 🌟

This is an extension of the traditional "Five Tiger Month Stem" calculation method, applying the rules of correlating year stems with month stems to the calculation of heavenly stems for the major life cycles.
Modern astrology software automates this process, but understanding the principle helps grasp the logic of the cyclical flow of stems and branches.

🧩 On the Favorable Phases of Movement (Auspicious Directions for the Five Elements)

Overall Translation
The Five Elements are in their prime and favorable phases 🔥 when they encounter the following earthly branches:

Fire thrives in 寅 (Yin), 午 (Wu), and 巳 (Si, the Snake position).
Metal thrives in 申 (Shen), 酉 (You), and 巳 (Si, the Twin Maiden Palace).
Wood thrives in 亥 (Hai), 寅 (Yin), and 卯 (Mao).
Water/Earth thrives in 申 (Shen), 亥 (Hai), and 子 (Zi).

Core Concept 💡
When the Five Elements are in their favorable earthly branches, they embody their energy fully, like fish in rivers 🌊, maximizing their generative and restrictive effects.

Modern Interpretation 🌟

Corresponds to modern career planning: Metal phases suit precision industries, Fire phases suit energy and creative fields, Wood phases suit education and culture, Water phases suit logistics and trade, Earth phases suit real estate and agriculture.
Geographical reference: Combine with the favorable elements to choose development locations.

🧩 On the Reversal of Movement (Unfavorable Directions for the Five Elements)

Overall Translation
The Five Elements are in their reversal and decline phases ⚠️ when they encounter the following earthly branches:

Fire declines in 戌 (Xu) and 亥 (Hai, the Water reservoir and extinction position).
Water/Earth declines in 辰 (Chen, Dragon) and 巳 (Si, Snake).
Metal declines in 丑 (Chou) and 寅 (Yin).
Wood declines in 申 (Shen) and 酉 (You, where Metal restricts Wood).

Practical Value ⚡

Periods for cautious investment: Industries corresponding to the declining elements may face obstacles.
Health warnings: Metal decline—respiratory issues; Wood decline—liver and gallbladder issues; Fire decline—cardiovascular issues; Water decline—kidney issues.

🧩 On the Auspicious and Inauspicious Phases of Movement

Overall Translation
Characteristics of Auspicious Phases ✅:
Encountering growth and prosperity positions brings success and prominence (e.g., Fire encountering Yin or Wu).
Characteristics of Inauspicious Phases ❌:
Encountering conflict, restriction, decay, or extinction leads to hardship and danger (e.g., Fire encountering Hai or Zi).
Core Rule 🔁:
Prosperity in growth phases leads to decline in decay and extinction phases, and the end of decay phases cycles back to growth—the ebb and flow of auspicious and inauspicious phases are embedded in this cycle.

Philosophical Reflection 🤔

Reveals the cyclical nature of fortune: Prosperity requires guarding against the onset of decline, while adversity holds the potential for renewal.
Shares philosophical commonality with modern economic cycle theories (e.g., Kondratiev waves, Kitchin cycles).

📚 Related Knowledge

Associated Concepts:

The Twelve Growth Stages (长生, 沐浴, 冠带…墓, 绝, 胎, 养).
Table of Five Elements' Prosperity and Decline by Season (Wood thrives in spring, Fire is strong, Earth is weak, Metal is trapped, Water rests).

Further Reading:

San Ming Tong Hui: On Major Life Cycles.
Yuan Hai Zi Ping: Preferences and Taboos in Movement.

Modern Research:

Application of cyclical laws in life planning (Tsinghua University Research Group on Traditional Numerology and Modern Decision-Making).

🧠 In-Depth Understanding

Suggestions for Modern Application ⚡

Career Cycle Management: Metal phases are suitable for transitioning to machinery or finance industries; Wood decline phases require caution in education projects.
Health Prevention: Fire reversal years warrant enhanced heart check-ups; Water prime years are suitable for water sports.
Investment Timing: Earth phases are good for real estate investments; Metal decline phases advise reducing metal futures.

Data-Driven Decision Reference 📊

Element	Favorable Industries	Risk Period
Fire	Energy, Internet, Catering	October of the Hai year (Pig year)
Metal	Machinery, Finance, Judiciary	January of the Yin year (Tiger year)
Wood	Education, Publishing, Gardening	July of the Shen year (Monkey year)
Water	Logistics, Tourism, Fisheries	April of the Si year (Snake year)
Earth	Real Estate, Agriculture, Ceramics	March of the Chen year (Dragon year)

Please translate the above content into English, maintaining the original format and structure.