怵目驚心

To fear or be afraid; timid or shy; to feel sad or distressed.

Eye; to look; to see; item; section; list; catalogue; order (taxonomy); title; name; mesh; leader.

to startle or frighten; to be alarmed or scared; to be shocked or shaken; to be disturbed or agitated

The physical heart; the mind or intellect; feelings or emotions; the center or core of something; intention or will.