at least 108 and up to 1080 per day is usual. Also unique in the KUSZ is the fact that celibacy is not required of those who are ordained. Rather, Seung Sahn created the idea of a "Bodhisattva Monk," which essentially is an individual who can be married and hold a job but also be a monk in the order. This status has now been superseded in the KUSZ by "Bodhisattva Teacher", who takes the 48 precepts but is not considered an ordained monk. Seung Sahn also held unorthodox views on Zen practice in Western culture, and was open to the idea of his dharma heirs starting their own schools as he had done. Seung Sahn is quoted as having said, "As more Zen Masters appear, their individual styles will emerge. Perhaps some of them will make their own schools. So maybe, slowly, this Korean style will disappear and be replaced by an American style or American styles. But the main line does not change." Author Kenneth Kraft offers an apt quote from Seung Sahn on the issue of Zen and Western culture in his book Zen, Tradition and Transition (pp. 194–195), Kyol Che During the summer and winter months, The Kwan Um School of Zen offers a Kyol Che (meaning "tight dharma")—a 21- to 90-day intensive silent meditation retreat. In Korea, both the summer and winter Kyol Che last a duration of 90 days, while the Providence Zen Center offers three weeks in the summer and 90 days in winter. Arrangements can be made for shorter stays for those with busy schedules. A Kyol Che provides a structured environment for meditators. Participation in one of these intensive retreats offers individuals the chance to free themselves from intellectual attachments and develop compassion. Participants have no contact with the outside world while undergoing a retreat, and the only literature permitted are those works written by Seung Sahn. They are in practice from 4:45 a.m. to 9:45 p.m. each day, and are not permitted to keep a diary during their stay. Talking is only permitted when absolute necessity arises and during dokusan (), a private meeting with a teacher. The school also offers Yong Maeng Jong Jins, which are two- to seven-day silent retreats complete with dokusan with a Ji Do Poep Sa Nim or Soen Sa Nim (Zen master). Hierarchy There are essentially four kinds of teachers in the Kwan Um