A book holds a house of gold

Similar sayings:

Hold back some goods for a thousand days and you will be sure to sell at a profit Hold back some goods for a thousand days and you will be sure to sell at a profit
One cannot manage too many affairs; like pumpkins in water, one pops up while you try to hold down the other One cannot manage too many affairs; like pumpkins in water, one pops up while you try to hold down the other
Gold is tested by fire, man by gold Gold is tested by fire, man by gold
A wicked book cannot repent A wicked book cannot repent
The house with an old grandparent harbors a jewel The house with an old grandparent harbors a jewel

Chinese sayings and proverbs