This is a Chinese idiom to describe an exchange of good will,  an act of reciprocity that shows respect for custom, decorum and etiquette. David and Siok mentioned two different Chinese idioms in this Juzi Speaks segment and share the common mistakes Mandarin learners make when they use these idioms. 礼尚往来 / LI3 SHANG4 WANG3 LAI2 / adv. (PROPER BEHAVIOR IS BASED ON RECIPROCITY) TO RETURN POLITENESS FOR POLITENESS 桃李之馈 / TAO3 LI3 ZHI1 KUI4 / noun. EXCHANGE GIFTS Juzi Speaks is a regular segment of the Juzi The Mandarin Podcast. David and Siok share an everyday Chinese phrase, an ancient proverb or even a piece of slang in a fun three minute segment. For more of their conversation about “Gifts and Giving”, listen to episode 33 of Juzi the Mandarin Podcast. Follow Juzi Podcast on Facebook ：https://facebook.com/juzipodcast For bilingual show notes on the Mandarin vocabulary shared during the episode, visit the official Juzi The Mandarin Podcast website at http://juzi.sg/index.php/2021/02/14/juzi-live-ep28-show-notes/