kaidan

…third mystery relates to the kaidan, or place of ordination, which is sacred and belongs to the “Lotus of the Good Law.”

…sacred place of ordination (Japanese: kaidan) where the believer could receive training in the doctrines of the Lotus Sutra. This sacred place might be seen as wherever the believer in the Lotus Sutra lives, for there is the Buddhist truth. The honzon, daimoku, and kaidan, “the three great secret laws”…