一行俗名张遂,魏州昌乐(今河南南乐县)人。《旧唐书》卷191《一行传》说他博览群书,“尤精历象、阴阳、五行之学”。武则天时期,权贵武三思想与他结交,他躲藏逃避,去中岳嵩山出家为僧,拜北宗著名禅僧普寂为师,学习禅法。唐睿宗即 Zhang Sui line common name, Wei Zhou Changle (now Henan Nanle County) people. “Old Tang” Volume 191 “Biography” said he read books, “You Jing calendar, Yin and Yang, the Five Elements of learning ”. Wu Zetian period, power and thought of Wusong make friends with him, he hid to escape, go to the mountain as a monk Songshan, thanks to the Northern Zen monks Puxian as a teacher, learning Zen. Tang Ruizong that