The ache of parting coils through the gut and won't unwind.
Tips
culture
Chinese associates emotion with the gut rather than the heart: 肠 (intestines) is the seat of grief. 断肠 = heartbroken, 九回肠 = guts churning nine times over. Feng Yansi's ci line 九回肠,双脸泪 paired the image with streaming tears.