玄 - mysterious, occultness, black

entrance; front door; entryway; entranceway; entry hall; vestibule; porch; foyer; mud room

expert; professional; master; connoisseur

unpolished rice; unmilled rice; brown rice

Japanese raisin tree (Hovenia dulcis)

koso genmai; fermented brown rice

mysterious profundity; quiet beauty; the subtle and profound; yūgen

winter

professionals

refusing to see a visitor

heaven is black and earth is yellow; heaven and earth

day of the boar in the tenth month

Black Tortoise (god said to rule over the northern heavens)