互助婚姻 [－－－－]

Jyutping wu6 zo6 fan1 jan1
Pinyin hù zhù hūn yīn

Definitions (Wiktionary)
  1. noun, neologism
    sham marriage (especially a marriage between a gay man and a lesbian woman arranged in response to parental expectations of a conventional marriage)
    (syn.) 形式婚姻, 形婚