A Study of the Structure, Philosophical Principles, and Philosophy of Hexagram Huo Tian Da You (Fire over Heaven, Great Possession)
This article systematically investigates the fourteenth hexagram of the Yijing, 'Fire over Heaven — Great Possession' (Huo Tian Da You), analyzing its trigram structure of Li above Qian below, elucidating the rich connotations of 'Great Possession,' and drawing upon pre-Qin literature to expound the principle of 'one yielding line in the place of honor, five firm lines responding to it' — the way of grand virtue and great enterprise — revealing its profound significance in ancient political philosophy.
Chapter Five: Hexagram Transformation and the Inverted, Complementary, and Nuclear Relationships of Da You
Section 1: The Principle of Hexagram Transformation
Da You can be derived from Qian (fifth line changing to yin), from Bi (complete yin-yang reversal), from Tong Ren (inversion), or theoretically from Da Zhuang.
Section 2: The Inverted Hexagram — Da You and Tong Ren
Da You and Tong Ren are inversions of each other. Tong Ren is the inner foundation, Da You is the outer fruition. Without the virtue of Fellowship, the enterprise of Great Possession cannot be achieved.
Section 3: The Complementary Hexagram — Da You and Bi
Da You and Bi are completely opposite in yin-yang. Da You with one yin governing five yang; Bi with one yang governing five yin. Though yin and yang are reversed, the underlying principle is the same: both use sincerity to govern the multitude.
Section 4: The Nuclear Hexagram — Da You Contains Guai
Da You's nuclear hexagram is Guai (Breakthrough). Within Great Possession lies latent the mechanism of decisive action. "Curbing evil" requires the force of decisiveness. Da You's upper nuclear trigram Dui also signifies joy — in the time of abundance, hearts are joyful.