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 A review of the early historical documents and literature of early Zen masters clearly reveals that they were well versed in numerous Mahāyāna Buddhist sūtras, including Madhyamaka.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
History of Buddhism the Chinese monk Xuanzang traveled to India, bringing back 657 Buddhist texts along with relics and statues. He established a famed translation school in the Tang capital of Chang'an (today's Xi'an), focusing on Yogacara school texts. Also during the Tang, Chinese Esoteric Buddhism was introduced from India. The Tang dynasty also saw the growth of Chan Buddhism (Zen), with the great Zen masters such as Mazu Daoyi and Linji Yixuan. In the later Tang, Chinese Buddhism suffered a setback during the Great Anti-Buddhist Persecution of 845. Buddhism recovered during the Song Dynasty (960–1279), which is known as the "golden age"