Chian （posthumously named Hwansong 唤醒 1664-1729）. Traveled throughout Korea and spend time at numerous temples. During his tenure as master at Kumsan-sa 金山寺， he initiated， as part of his program， a set textual study track. The most basic， called the Four Teachings Course （sagyo-kwa 四经科） included the four seminal scriptures of the Sinitic Maha^ya^na doctrinal tradition: the Sutra of the Heroic March Sama^dhi 首楞严经， the Awakening of Faith 起信论， the Diamond Sutra 金刚经 and the Sutra of Perfect Enlightenment 圆觉经. This track of study would have a permanent influence on the style of training for Korean monks and nuns， who still nowadays follow a similar course of study.