Zen expected to become familiar with the classics of the Zen canon". A review of the early historical documents and literature of early Zen masters clearly reveals that they were well versed in numerous Mahāyāna Buddhist sūtras, including Madhyamaka. Especially the Lotus Sutra played a large role in the development of East Asian Buddhism, including Zen. Nevertheless, Zen is often pictured as anti-intellectual. This picture of Zen emerged during the Song Dynasty (960–1297), when Chán became the dominant form of Buddhism in China, and gained great popularity among the educated and literary classes of Chinese society. The use of koans, which
Buddhism in the United States and Australia. In 1995, he and his organization split with Sanbo Kyodan in response to reorganization of the latter following Yamada's death. The Pacific Zen Institute led by John Tarrant, Aitken's first Dharma successor, continues as an independent Zen line. There are also Zen teachers of Chinese Chán, Korean Seon, and Vietnamese Thien. In 1962, Hsuan Hua moved to San Francisco's Chinatown, where, in addition to Zen, he taught Chinese Pure Land, Tiantai, Vinaya, and Vajrayana Buddhism. Initially, his students were mostly ethnic Chinese, but he eventually attracted a range of followers. Sheng-yen first visited the United States in 1978