二奶專家 [－－专－]

Jyutping ji6 naai1 zyun1 gaa1
Pinyin èr nǎi zhuān jiā

Definitions (CC-CEDICT)
  1. "mercenary expert", a person who is supposedly an independent expert, but receives payment for making comments favorable to a particular entity
Definitions (Wiktionary)
  1. noun, derogatory, neologism, slang
    supposedly independent expert who actually receives benefits for making comments favourable to a particular entity