Eisai Buddhist Japan: the "Lotus Sutra", "Golden Light Sutra", and the "Humane King Sutra" ("Ninnōkyō"). Eisai’s famous written piece, the "Kōzen gokokuron" or "The Promotion of Zen for the Protection of the Country", was heavily influenced by the "Ninno kyo" which states “the preservation of Buddhism is inextricably bound to the preservation of their own country”. The "Kōzen gokokuron" was written with the intention to correct established schools of Buddhism by giving them examples of moral practice and to convince the Minamoto military rulers to support Zen Buddhism and a Zen government. The writing promotes the Zen ideals to bring Buddhism
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