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
Zen Song Dynasty, which established a strong central government. During the Song Dynasty, Chán (禪) was used by the government to strengthen its control over the country and Chán grew to become the largest sect in Chinese Buddhism. An ideal picture of the Chán of the Tang period was produced which served the legacy of this newly acquired status, and the period of the Tang Dynasty came to be regarded as the "golden age" of Chan. With the establishment of the Wu-shan (Gozan) system during the Southern Sung, the Chinese bureaucratic system entered into Zen temples throughout the country, and a