그러나 무염은 821년(헌덕왕 13) 입당했다가 845년(문성왕 7)에 귀국했으므로 이 창건 설화를 그대로 받아들이기는 어렵다.
However, it is difficult to accept this foundation story directly since Muyeom went to Tang in 821 (13th year of King Hyeondeok) and returned in 845 (7th year of King Munseong).