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
Buddhism in Italy zen monastery Ensoji il Cerchio, founded and guided by the zen master Testugen Serra; in Pomaia, the Tibetan Buddhism finds one of the biggest center in Europe, the Lama Tzong Khapa Institute. The Vajrayana Buddhism is represented, among others, by the centers of the Diamond Way Buddhism of the Kagyu school, spread in almost all the Italian regions. Even the Japanese Buddhist school founded by Nichiren Daishonin sees in the UBI his representance: the temple of the Nichiren Shu Renkoji, in Cereseto, near Novara, guided by the master Shoryo Tarabini, and the association Nipponzan Myohonji, which provided to the grounding