The Chinese literature produced during this period is known as the literature of the Five Mountains because of its close association with the monks of the Five Mountain System. The founder of the lineage was Yishan Yining (Issan Ichinei in Japanese), an immigrant from Yuan China, and his disciples included Kokan Shiren, Sesson Yūbai, Musō Soseki and others; these monks planted the seeds of the Five Mountains literary tradition. Kokan's Genkō Shakusho is an important work of this period. Ichiko remarks that while Chūgan Engetsu also created excellent writings at this time, it was Musō's disciples Gidō Shūshin and who brought the literature of the Five Mountains to its zenith. Keene calls the latter two "masters of Chinese poetry", describing Zekkai as "the greatest of the Five Mountains poets".
