The deep meaning; the meaning of the profound; it refers chiefly to the Tiantai method of teaching which was to proceed from a general explanation of the content and meaning of the various great sutras to a discussion of the deeper meaning. the method was: (1) 釋名 explanation of the terms; (2) 辨體 defintion of the substance; (3) 明宗 making clear the principles; (4) 論用 discussing their application; (5) 判教 discriminating the doctrine. v. also 玄疏.