磨破嘴皮子 [－－－－－]

Jyutping mo4 po3 zeoi2 pei4 zi2
Pinyin mó pò zuǐ pí zǐ

Definitions (Wiktionary)
  1. phrase, figuratively, idiomatic
    to repeat again and again; to talk until one is blue in the face
  2. phrase, idiomatic
    to wear out one's lips

磨破嘴皮子 [－－－－－]

Jyutping mo4 po3 zeoi2 pei4 zi2
Pinyin mó pò zuǐ pí zi

Definitions (CC-CEDICT)
  1. to wear out one's lips (idiom)
  2. to talk until one is blue in the face
  3. to repeat again and again