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Jyutping jan4 cing4 bok6 gwo3 zi2
Pinyin rén qíng báo guò zhǐ

Definitions (粵典–words.hk)
  1. 語句
    人情​紙​咁​薄
    human decency is rare in relationships between people; literally: human decency is thinner than paper

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Jyutping jan4 cing4 bok6 gwo3 zi2
Pinyin rén qíng bó guò zhǐ

Definitions (CC-CANTO)
  1. human relationship is thinner than a paper, which means a relationship can be very weak