キトラ古墳 (Kitora Kofun) has great astrological significance that dates back millennia to ancient Chinese astrology. The Four Gods are the central figures of an ancient Chinese system of astrology and geomancy which was imported to Japan and absorbed into Onmyodo mysticism, among other beliefs. In this system, there were 28 'star houses' (constellations) which ran the circumference of the sky. The Heavenly Emperor divided the sky into the northern, southern, eastern, and western quadrants, each with 7 star houses; each quadrant was ruled by a divine beast. In the original Chinese version, there was one more div