Dhyāna in Buddhism the Japanese Rinzai school, but it also occurs in other schools or branches of Zen depending on the teaching line. The Zen student's mastery of a given kōan is presented to the teacher in a private interview (referred to in Japanese as "dokusan" (独参), "daisan" (代参), or "sanzen" (参禅)). While there is no unique answer to a kōan, practitioners are expected to demonstrate their understanding of the kōan and of Zen through their responses. The teacher may approve or disapprove of the answer and guide the student in the right direction. The interaction with a Zen teacher is central in
Katsu (Zen) Katsu (Zen) Katsu (Japanese: 喝; Cantonese: "", Pinyin: "hè", Wade-Giles: "ho") is a shout that is described in Chán and Zen Buddhism encounter-stories, to expose the enlightened state (Japanese: "satori") of the Zen-master, and/or to induce initial enlightenment experience in a student. The shout is also sometimes used in the East Asian martial arts for a variety of purposes; in this context, "katsu" is very similar to the shout "kiai". The word in Chinese means literally "to yell" or "to shout". In Japanese it has also developed the meaning of "to browbeat", "to scold", and "hoarse". In the context of