Customers are jade; merchandise is grass.
More Chinese Proverbs:
Lend money to someone who won't pay you back and he'll hate you.Chinese
You want no one to know it? Then don't do it.
Chinese
To have beautiful servant girls is a threat to good marriages.
Chinese
One can forgive a murder but not impoliteness.
Chinese
With money, a dragon -- without it, a worm.
Chinese
The wise man and the tortoise travel but never leave their home.
Chinese