Interpretation of Mr. Yin and Yang's Noun

Yin-yang teacher refers to a kind of person who knows some geomantic omen, Yin-yang gossip and five elements numerology. It evolved from Taoism in the early days, and calculated the birth and death of good and bad luck and so on. Nowadays, it refers to Feng Shui master, but in some places in Northeast China, professionals engaged in funeral etiquette are also called Yin and Yang masters.