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 A review of the early historical documents and literature of early Zen masters clearly reveals that they were well versed in numerous Mahāyāna Buddhist sūtras, including Madhyamaka.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
Zen in the United States "Chán"), Korean Zen (or "Seon"), and Vietnamese Zen (or "Thien"). The first Chinese Buddhist monk to teach Westerners in America was Hsuan Hua, a disciple of the 20th-century Chan master, Hsu Yun. 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. In 1970, Hsuan Hua founded Gold Mountain Monastery in San Francisco and in 1976 he established a retreat center, the City Of Ten Thousand Buddhas, on a 237-acre (959,000