黃蜂尾後針，最毒婦人心 [黄－－后针－－－妇－－]

Jyutping wong4 fung1 mei5 hau6 zam1 zeoi3 duk6 fu5 jan4 sam1
Pinyin huáng fēng wěi hòu zhēn ， zuì dú fù rén xīn

Definitions (粵典–words.hk)
  1. 語句
    形容​女人​心腸​狠毒
    used to describe women who act mercilessly; literally, the sting on a wasp, a woman's heart is the most vicious