未見官先打三十大板 [－见－－－－－－－]

Jyutping mei6 gin3 gun1 sin1 daa2 saam1 sap6 daai6 baan2
Pinyin wèi jiàn guān xiān dǎ sān shí dà bǎn

Definitions (CC-CANTO)
  1. (proverb) saying someone needs to dissipate/pay out the price before getting what they need/want
Definitions (粵典–words.hk)
  1. 語句
    比喻​未有​機會​得到​想要​嘅​嘢​之前​，​要​付出​咗​代價先
    to pay a price before one can have the possibility of getting what one wants; literally: thirty strokes on the behind before one can see the official