describing a disease that has advanced to an incurable stage, having reached the vitals (the area between the heart and diaphragm)

a critical or incurable illness

A deep, habitual love of mountain scenery and natural landscapes; literally "mountain springs and rocks in one's vital organs," meaning the obsession is like an incurable disease

the area between the heart and the diaphragm, traditionally considered unreachable by medicine; also used to describe a terminal illness or deep-seated trouble when used in the phrase [[病入膏肓|病入膏肓|bing4 ru4 gao1 huang1]]