親者痛，仇者快 [亲－－－－－－]

Jyutping can1 ze2 tung3 ， sau4 ze2 faai3
Pinyin qīn zhě tòng ， chóu zhě kuài

Definitions (Wiktionary)
  1. proverb
    That which brings pain to one's friends and brings joy to one's enemies (should not be done).
    (syn.) 亲痛仇快, 親痛仇快