Japanese Zen is derived from the Japanese pronunciation of the Middle Chinese word 禪 (Chan) which traces its roots to the Indian practice of dhyāna ("meditation"). Buddhism was introduced to China in the first century CE. According to tradition, Chan was introduced around 500 CE by Bodhidharma, an Indian monk teaching dhyāna. He was the 28th Indian patriarch of Zen and the first Chinese patriarch. Buddhism was introduced in Japan in the 8th century CE during the Nara period (710-794) and the Heian period (794–1185). Zen was not introduced as a separate school in Japan until the 12th century during the Kamakura
History of Buddhism first western monastics such as U Dhammaloka, Ananda Metteyya and the German Nyānatiloka Thera (1878–1956). Another important element leading to the growth of Buddhism in the west was the large scale immigration of Chinese and Japanese to the United States and Canada in late 19th century. Refugees from Vietnam, Laos and Cambodia have also immigrated to west, beginning in 1975. Asian Buddhists such as DT Suzuki, Hsüan Hua, Hakuun Yasutani and Thích Nhất Hạnh were influential in teaching Zen Buddhism in the West in the 20th century. Shunryu Suzuki opened the Soto San Francisco Zen Center (1961) and the Tassajara