This refers to Zhiyi (智𫖮), the influential Chinese Buddhist monk of the Sui Dynasty, whose teachings were compiled and recorded by his disciple Zhishen (知礼述). However, the attribution "日本 实观分会" appears to be a misinterpretation or a later annotation related to a Japanese collation or division of Zhiyi's work, rather than a co-author or translator. Zhiyi is renowned for his authorship of the *Móhē Zhǐguān* (摩诃止观), a foundational text of Tiantai Buddhism.