來而不往非禮也
it is impolite non to teeiprocate;one should return or.give as good as one gets;it is ordy Proper to repay in kind
來而不往非禮也lái ér bù wǎnɡ fēi lǐ yě
有來無往,不符合禮儀。one should return as good as one receives, one should give as good as one gets, Courtesy on one side only lasts not long.