Wu Yin and Ji Mao City Wall Earth

[戊寅已卯城头土]

城头土者，天京玉垒，帝里金城，龙盘千里之形，虎踞四维之势。此土有成有未成，作两般论。凡遇见路旁，为已成之土，不必用火，若无路旁，为未成之土，必须用火；大都城土皆须资木，杨柳癸未最佳，壬午则忌；桑拓癸丑为上，壬子次之；庚寅辛卯就位相克则城崩不宁，何以安人也耶？如见木无夹辅，只以贵人禄马论之。见水有山为显贵，甲申、丁丑俱吉，天河滋助，亦吉，唯忌霹雳、大海，壬戌不忌，合化俱以吉。推土爱路旁，防见诸火，大驿逢山，须作贵观，若独见无根本，贫夭孤寒。五行见金，只有白蜡，怕巽，二者相妨，余金无用，亦须以贵人禄马看之。

Wu Yin and Ji Mao City Wall Earth

📜 Overall Translation

Wu Yin and Ji Mao City Wall Earth are like the sturdy walls of a capital city and strategic military strongholds, embodying both the vast layout of a dragon vein and the commanding presence of a tiger guarding all directions 🌰. This type of earth is divided into two states: "completed" and "incomplete":

• Completed Earth: If the fate chart contains Roadside Earth (Geng Wu, Xin Wei), the earth nature is stable and does not require fire assistance 🔥;
• Incomplete Earth: If Roadside Earth is absent, fire 🔥 (such as Stove Fire, Mountain Base Fire) is needed to forge and stabilize it.

Wood Compatibility 🌳:

• City Wall Earth requires wood for harmony, but different wood types have vastly different effects:

  Wood Type	Auspiciousness	Typical Stems and Branches
  Willow Wood 🌿	Very Auspicious	Gui Wei (soft wood protects earth)
  Mulberry Wood 🍃	Moderately Auspicious	Gui Chou > Ren Zi
  Pine and Cypress Wood 🌲	Very Inauspicious	Geng Yin, Xin Mao (wood overcomes earth, causing collapse)
  ⚠️ If wood stands alone without support (e.g., no fire to facilitate interaction), its value can only be judged based on auspicious signs like Nobleman or Luma.

Water Compatibility 🌊:

• Auspicious: Water accompanied by mountains ⛰️ (e.g., Gully Water, Spring Water), or Jia Shen Spring Water, Ding Chou Gully Water; Heavenly River 💧 water (Bing Wu, Ding Wei) for nourishment is also favorable.
• Inauspicious: Thunderbolt Fire ⚡ (sudden impact), Great Sea 🌊 water (except Ren Xu, as Xu earth controls water).

Earth Compatibility ⛰️:

• Roadside Earth (Geng Wu, Xin Wei) can enhance earth nature, but beware of fire 🔥 (especially Sun Fire, Thunderbolt Fire) counteracting it.

Metal Compatibility ⚔️:

• Only White Wax Metal (Geng Chen, Xin Si) is usable, but avoid clashing with the "Xun" (southeast) direction;
• Other metals require evaluation in conjunction with Nobleman/Luma signs, otherwise they are ineffective.

Special Combinations: Great Post Earth (Wu Shen, Ji You) encountering mountains ⛰️ (e.g., the Gen Mountain trigram) indicates nobility; if the earth is isolated and rootless (lacking fire or wood support), it leads to poverty and loneliness.

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🧠 In-Depth Understanding

Core Concept 💡

City Wall Earth symbolizes "man-made defense systems," with its core being stability and functionality. Its auspiciousness or inauspiciousness depends on:

1. Its own state (whether "constructed" — Roadside Earth marks completion)
2. Environmental compatibility (wood as vegetation for slope protection, water as a moat, mountains as natural barriers)

Modern Interpretation 🌟

1. Changes in Social Structure:

   • Ancient city walls → Modern urban complexes/community planning
   • "Collapse" metaphorically represents urban planning conflicts (e.g., Geng Yin Pine and Cypress Wood overcoming earth can be likened to high-rise buildings putting pressure on foundations)

2. Updated Value Concepts:

   • "Nobleman Luma" → Modern network resources and social capital
   • "Rootlessness leads to poverty and early demise" → Systems lacking core competitiveness will ultimately fail

Practical Value ⚡

• Career Choices: City Wall Earth favoring wood and fire suits careers in civil engineering, urban planning (requiring fire as energy/technology); favoring mountains and water suits landscape design, environmental protection industries.
• Risk Avoidance:

  Avoid Pine and Cypress Wood (Geng Yin, Xin Mao)  
  → Practical advice: Avoid cooperation with overly rigid teams (e.g., mechanically executing roles)  
  Avoid Thunderbolt Fire/Great Sea Water  
  → Avoid sudden risks (e.g., volatile investment areas, properties in earthquake zones)  
  

Philosophical Reflection 🤔

Law of Systemic Balance:

Man-made systems (City Earth) need to leverage nature (wood, water, mountains) but must guard against backlash (metal overcomes earth, fire scorches earth). When modern individuals construct career/life systems, they must also follow "dynamic balance" — technology (fire) and ecology (wood), defense (earth) and circulation (water) are all indispensable.

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📚 Related Knowledge

• Associated Concepts:
  • Roadside Earth (incomplete/completed earth) | Willow Wood (Gui Wei) vs. Pine and Cypress Wood (Geng Yin)
  • Nobleman Luma (the modern mapping of the auspicious sign system)
• Further Reading:
  • San Ming Tong Hui · Volume 2 on the success and failure of earth nature
  • Di Tian Sui · Earthly Branches Chapter: "Why worry about the complexities of Wu and Ji, only fear the spring sun and autumn rain"
• Modern Research:
  Wang Tingzhi's Zhongzhou School Xuan Kong Studies extends City Wall Earth to "urban feng shui patterns," proposing a transformation theory that "earth nature requires circulation, not sealing."

Note: The entire text strictly adheres to the principle of "demystification," transforming the five elements' generation and restriction into models of systemic synergy/conflict, with conclusions all pointing toward real-world decision-making logic.