Robiraki

  In Chanoyu, the sunken hearth is opened on the first day of the Wild Boar of the tenth month.  According to Japanese traditional architecture, the ro is a permanent part of a Tearoom, which is usually covered over when not in use.  Therefore, the floor has to be opened to reveal the hearth, hence “opening” the ro. The traditional opening of the hearth, ro-biraki, 炉開, hearth-open, should occur on the first I no hi, 亥の日, Boar’s day, of the tenth month. of the kyū-reki, 旧暦, old-calendar.  This day varies greatly, as the Zodiac cycle of twelve animals is different each year.  In addition, the “tenth month”...

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