ONMYORYO

or On'yo-ryo. The Bureau of Yin and Yang established in theritsuryosystem to observe, record and divine the movements of the heavens as well as other elements ofonmyodo. The imperial court employed onmyo-shi or on'yoshi, 'Masters of Yin and Yang', Taoist ritual specialists, from the ritsuryo period up to theMeijirestoration.