Reciprocity, quoted from The Great Transformation written by Karl Polanyi, or tit-for-tat in game theory may be the effective principles to regulate social relationship, as you mentioned in similar fashion. We may calculate, measure or even expect the future reward in return for giving something to others. In my humble opinion, it may reduce the value of giving which comes from the heart.

You may write in English, because the quality of translation into Korean seems to be not good.