冤有冤头，债有债主。比喻要了解事情，必须找为主的人。
when settling disputes one should not involve third parties; for every grievance someone is responsible, for every debt there is a debtor (idiom)
冤(yuān)
有(yǒu yòu)
头(tóu tou)
()
债(zhài)
主(zhǔ)
