量入為出 liàng rù wéi chū

DEFINITIONS

  1. to assess one's income and spend accordingly (idiom); to live within one's means
  2. You can only spend what you earn.

CHARACTERS

量 liàng measure, quantity, capacity
入 rù enter, come in(to), join
為 wéi do, handle, govern, act; be
出 chū go out, send out; stand; produce