What do you mean by six evils?

Six evils is a geomantic term, indicating a relationship between the twelve branches of the earth. Six evils are generally unlucky.

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Four-pillar numerology (eight characters) and geomantic terminology. Represents the relationship between the twelve branches. The master summed it up as follows: children don't harm each other, ugliness harms each other in the afternoon, yin harms each other, hair harms each other, and Shen harms each other, especially. Six evils are generally unlucky.