書中自有顏如玉 [书－－－颜－－]

Jyutping syu1 zung1 zi6 jau5 ngaan4 jyu4 juk6
Pinyin shū zhōng zì yǒu yán rú yù

Definitions (Wiktionary)
  1. proverb
    If you study hard, you will be successful, and a beautiful woman will want to marry you.