Dhyāna in Buddhism "silent illumination." This became the source of some differences in practice between the Línjì and Cáodòng schools. A kōan, literally "public case", is a story or dialogue, describing an interaction between a Zen master and a student. These anecdotes give a demonstration of the master's insight. Koans emphasize the non-conceptional insight that the Buddhist teachings are pointing to. Koans can be used to provoke the "great doubt", and test a student's progress in Zen practice. Kōan-inquiry may be practiced during zazen (sitting meditation), kinhin (walking meditation), and throughout all the activities of daily life. Kōan practice is particularly emphasized by
Buddhism in the West conversion, Buddhism also became an established minority religion in Latin America in the 20th century, with adherents mostly common from the educated middle classes. According to Frank Usarski, Buddhism remains a statistically small part of South America's religious field, "with around 500,000 practitioners and approximately 600 groups" of which around 27% are Tibetan Buddhists, 25% are Soka Gakkai and 22% are Zen. Japanese immigrants arrived in Latin America at the end of the 19th century and throughout the 20th century. With the largest population in Latin America, Brazil is also home to the most Buddhists (around 230,000) in Latin America