HSK 6
Correct
礼尚往来
/ lǐ shàng wǎnglái /
Strokes
Definition
lit. proper behavior is based on reciprocity (idiom)/fig. to return politeness for politeness
Example
Definition
courtesy demands reciprocity; etiquette requires reciprocation
Definition
treat sb the way he treats you; pay sb back in his own coin; give as good as one gets