Eastern Classical Astrology

Eastern Classical Astrology is the accessible public-facing name for the Seven Regulators & Four Shadows (七政四餘) system.

The term "Eastern" is used in preference to "Chinese" to reflect the astronomical and philosophical heritage of the tradition — its foundational techniques predate modern political boundaries, tracing to astronomical records spanning the Han dynasty (Mawangdui Silk Texts, c. 168 BCE) and earlier.

The term "Classical" signals that this is a tradition grounded in verifiable celestial mechanics — astronomically precise planetary positions that can be independently confirmed against modern ephemerides — rather than symbolic or virtual-star systems.