一行

Từ Điển Thuật Ngữ Phật Học Hán Ngữ

One act (of body, mouth, or mind); holding to one course; devoted. Yixing, A.D. 672-717, a celebrated monk whose secular name was 張遂 Zhang Sui, posthumous title 大慧禪師; he was versed in mathematics and astronomy, a reformer of the Chinese calendar, and author of several works.