互通有無 hù tōng yǒu wú

DEFINITIONS

  1. mutual exchange of assistance (idiom)
  2. to benefit from each other's strengths and make up each other's shortfalls
  3. to reciprocate with material assistance
  4. scratch each other's back

CHARACTERS

互 hù mutually, reciprocally
通 tōng pass through, common, communicate
有 yǒu have, own, possess; exist
無 wú negative, no, not; lack, have no