tòng​chù

weak point

痛处 (痛處) tòng​chù
weak point noun
a figurative sensitive spot or vulnerability, such as a shortcoming or a painful memory

His words hit me right where it hurts.

sore spot noun
a physical location on the body that is painful or tender

The doctor pressed on my sore spot to diagnose the condition.

Frequency

Movie subtitles
1.28 per million appears in 1% of films
Written text
0.884 per million

Sources

Definitions
CC-CEDICT