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Jyutping gun1 jam1 co5 lin4
Pinyin guān yīn zuò lián

Definitions (粵典–words.hk)
  1. 語句
    本指​觀音​菩薩​坐​喺​蓮​花石​上顯​聖​嘅​形象​。​後​多指​女上​男​下​嘅​性行​為​體位
    Originally means the image of Goddess of Mercy(a.k.a. Kwun Yam) sits on the lotus seat and presents the miracle. But nowadays mostly used to describe the sexual position with the woman sitting on top of the man.

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Jyutping gun1 jam1 zo6 lin4
Pinyin guān1yin zuò lián

Definitions (CC-CANTO)
  1. a sexual position with the woman sitting on top the man [written and colloquial]