In this period, the full-blown Zen sect of Buddhism was introduced into Japan by Eisai, Dogen, and other priests who went to Sung-dynasty China, and the sect gradually increased its influence in spite of the pressure from the old Buddhist powerhouses, such as Enryaku-ji Temple on Mt. Hiei.
この時代には栄西、道元らの入宋僧によって日本にも本格的な禅宗が伝わり、比叡山などの旧仏教の圧迫を受けつつも、徐々に勢力を伸ばしていった。