In order to explore the background of completing Ilyeon`s idea character I reflect his performance in Biseul Mt. After Ilyeon had studied the Buddhism for 22 years in Biseul Mt. he takes part in engraving Tripitaka Sutra of Jeongrim Monastery in Namhae. The monk goes to Seonweol Temple. Then he returns to Inheung Temple in Biseul Mt. and works for 10 years. Thereafter he rebuilds Gajisanmun(迦智 山門) in Unmun Temple & Ingaksa Temple, leads Buddhism sphere by opening Gusanmundowhoi(九山門都會). The mountain neighbors on Hyeonpung, Seongju, Changnyeong and Milyang. But it is closer to Hyeonpung. According to 『Sinjeungdonggukyeo jiseungram』, 「Ilyeon Epitaph」 and 『Samgukyusa』 etcetra there are monasteries of many Buddhist Thoughts. They are Whoaeumjong, Gwaneum siang, Yugajong, Amitadoryang, Munsusinang, Daranisinang and Seonjong. Biseul is the completing of monks with the spirit of virtuoso since Shila. With living in Biseul Mt. for the most of his lifetime he accommodates and developes many Buddhist factions and thoughts. The Zen Master reerects Inheungsa`s power and opens Bulilgyeolsa(佛日結社). To solve the problems of the Buddhism in Weon Intervention the Grand Monk opens Gwanum-Belief and Gyeolsaundong(結社運動) for the relief of the presence. As the captain of Gusan Ilyeon begins Gusanmundowhoi during the later 5 years in Hasanso(下山所) Ingak Monastery