Chapter Two: The Conjunction of Yin and Hai — The Azure Dragon Rising from the Deep and the Verdant Wood of the Spirit

I. Astronomical and Etymological Investigation

Yin corresponds to the first month establishment. In oracle bone script it takes the form of an arrow, or resembles two hands pushing forward. The Shuowen states: "Yin means the kneecap. In the first month, Yang breath stirs, departing from the Yellow Springs, desiring to emerge above, while Yin remains strong."

Hai corresponds to the tenth month general. In oracle bone script it resembles a pig; in antiquity it was interchangeable with "nucleus" (he), the kernel in which all things are stored.

Question: Yin is Yang-Wood, Hai is Yin-Water. That Water engenders Wood has always been self-evident — why then speak of "conjunction"$4 And why does it transform into Wood$5

II. In-Depth Analysis from the Perspective of High Antiquity

This pair among the Six Conjunctions is celebrated as the "Conjunction of Longevity" and is the most vital of the six.

1. The Waters of Kunlun and the Wood of Fusang:
   • In the geographic models of the Shanhaijing (Classic of Mountains and Seas) and the Huainanzi, Hai occupies the northwest (the Gate of Heaven) and Yin the northeast (the Gate of Ghosts / Gate of Life).
   • Hai is the Gate of Heaven — the waters of the Suspended River, the ford of the Celestial River.
   • Yin is the Opening of Earth — the origin of evolution.
   • When the Dipper handle points to Yin (spring returns to the land), the Sun lodges in Hai (the northwestern Gate of Heaven). The Sun has completed its yearly journey and returned to the Gate of Heaven, transmitting its energy in the form of "Water" to the "Wood" of the East.
2. The Mechanism of Wood-Transformation — Cracking Open the Kernel:
   • The essence of "transformation" (hua) is a change of form. Within Hai lies hidden Jia-Wood (at its stage of Longevity); Yin is the Emolument of Jia-Wood.
   • Hai is not merely Water — it is the "kernel." Yin is "unfolding."
   • The conjunction of Yin and Hai is the process of "cracking open the kernel." The waters of Hai moisten the Jia-Wood within, enabling it to break through the soil at the hour of Yin. The destiny of Water is spent, wholly transformed into the rising and sprouting breath of Wood.
   • The Huangdi Neijing (Yellow Emperor's Inner Classic), Suwen, chapter "Great Treatise on the Subtleties of the Six" (Liuwei Zhida Lun), states: "When something is overbearing it causes harm; when succession governs it, control arises; and from control come generation and transformation." Were the waters of Hai not conjoined with Yin, they would be floodwaters run amok; conjoined with Yin, Water finds its destination and is transformed into a towering tree reaching to the sky.
3. Citations and Corroboration:
   • The Zuozhuan, Seventh Year of Duke Zhao: "The meeting of Sun and Moon is called chen (a temporal node)." The conjunction of Yin and Hai is truly the image of water and wood in limpid splendor.
   • The shamanic historians of high antiquity held that Hai was "the food of spirits" and Yin was "the beginning of humankind." When the divine and the human intersect, the resulting breath is pure and exalted.

Conclusion The conjunction of Yin and Hai transforming into Wood is the "Wood of Sprouting and Rising." Its imagery is that of an ancient tree greeting spring, of a stream with far-reaching origins. It answers the question "Whence does life come$6" — from the nourishment of the Celestial River (Hai) and the awakening of the East (Yin).