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
Aniconism in Buddhism Theravada temples and other sites typically concentrate on a single large sculpture of the Buddha, whereas Mahayana temples have larger numbers of images of a greater variety of figures with varying degrees of spiritual significance. However some schools, such as Zen Buddhism in Japan, have also shown a general tendency towards aniconism, though without specific prohibition of figurative images. Aniconism in Buddhism Since the beginning of the serious study of the history of Buddhist art in the 1890s, the earliest phase, lasting until the 1st century CE, has been described as aniconic; the Buddha was only represented through symbols such