耿耿于怀 gěng gěng yú huái

DEFINITIONS

  1. to take troubles to heart (idiom); brooding

CHARACTERS

耿 gěng bright, shining; have guts
耿 gěng bright, shining; have guts
于 yú
HSK 3
in, on, at; go to; surname
怀 huái
HSK 4
bosom, breast; carry in bosom