A Critical Examination of the Qi Transformation of the Twelve Earthly Branches' Six Conjunctions

Chapter 2: The Harmony of Yin and Hai—The Rising Dragon from the Abyss and the Azure Spirit Wood

I. Astronomical and Etymological Investigation

Yin (寅) is the designation for the 1st month. Its oracle bone form resembles an arrow or two hands pushing forward. Shuowen Jiezi states: "Yin, is the knee. In the first month, Yang energy stirs, emerging from the Yellow Springs (underworld), desiring to rise, though Yin remains strong." Hai (亥) is the designation for the 10th month. Its oracle bone form resembles a pig, anciently synonymous with hé (核, kernel), the kernel where all things are stored.

Question: Yin is Yang Wood, and Hai is Yin Water. It is universally accepted that Water generates Wood; why must it be called a "Harmony," and why does it transform into Wood$4

II. In-Depth Analysis from the Ancient Perspective

This pair of harmonies is hailed as the "Harmony of Long Life" (Cháng Shēng zhī hé) and is the most vital set.

1. The Water of Kunlun and the Wood of Fusang:
   • In the geographical models presented in the Classic of Mountains and Seas (Shanhaijing 山海经) and Huainanzi, the position of Hai (Northwest) is the Gate of Heaven (天门), while Yin (Northeast) is the Gate of Ghosts/Gate of Life (鬼门/生门).
   • Hai is the Gate of Heaven, the source of the Celestial River's flow, the sluice gate of the Heavenly Stream.
   • Yin is the Rupture of the Earth (地辟), the beginning of evolution.
   • When the Dipper points to Yin (Spring returns to the earth), the Sun is in Hai (the Northwest Gate of Heaven). This signifies the Sun concluding its annual journey and returning to the Gate of Heaven, transferring its energy in the form of "Water" to the "Wood" in the East.
2. The Mechanism of Transforming into Wood—Breaking the Kernel and Sprouting:
   • The essence of "Transformation" (huà) is a change in form. Hai stores Jia Wood (the stage of Chang Sheng, Long Life), and Yin is the Lu (祿, Prosperity/Station) position for Jia Wood.
   • Hai is not merely Water; it is the "Kernel." Yin is "Evolution."
   • The Harmony of Yin-Hai is the process of "Breaking the Kernel" (破核). The Water of Hai nourishes the internal Jia Wood, causing it to burst forth from the soil in the month of Yin. The intrinsic Qi of the Water is exhausted, entirely converting into the ascending Qi of Wood.
   • The Huangdi Neijing, in Suwen – Liu Wei Zhi Dalun (素问·六微旨大论), states: "When excessive, it harms; when supported, it is controlled; when controlled, it generates transformation" (亢则害，承乃制，制则生化). If the Water of Hai were not harmonized by Yin, it would become a flood; harmonized by Yin, the Water finds its destination and transforms into a towering tree.
3. Quotation and Verification:
   • The Zuo Zhuan (左传), in the account of Duke Zhao, 7th Year, states: "The conjunction of the Sun and Moon is called Chen (a calendrical point)" (日月之会是谓辰). The harmony of Yin-Hai is, in reality, the image of the pure splendor of Water and Wood.
   • Ancient shamans and historians believed Hai to be the "Nourishment of the Spirits" (神之食) and Yin to be the "Beginning of Humanity" (人之始). When Spirit and Man interact, their Qi is pure and noble.

Conclusion The Harmony of Yin-Hai transforming into Wood is the "Ascendant Wood" (生发之木). Its imagery is the ancient tree meeting Spring, a source that flows endlessly. It answers the question of "where life originates"—from the nourishment of the Celestial River (Hai) and the awakening in the East (Yin).