书中自有黄金屋，书中自有颜如玉
shū​zhōng​zì​yǒu​huáng​jīn​wū​shū​zhōng​zì​yǒu​yán​rú​yù

study hard for success

书中自有黄金屋，书中自有颜如玉 書中自有黃金屋，書中自有顏如玉 shū​zhōng​zì​yǒu​huáng​jīn​wū​shū​zhōng​zì​yǒu​yán​rú​yù
study hard for success
Literally "within books one naturally finds houses of gold and beauties like jade"; used as a proverb to encourage diligence in study by promising that wealth and a beautiful wife will follow academic success.