Makyo

The term is a Japanese word that literally means "realm of demons/monsters" or "uncanny realm" or forsaken place, and hellhole.
In Zen, Makyō is a figurative reference to the kind of self-delusion that results from clinging to experience. Makyō used in a broad sense refers to people's attachments to experiences in their everyday lives. However, makyō may also be used in a more specific sense, referring to illusory experiences that sometimes occur during Zen meditation.... plus