左耳进心右耳离人
[zuŏ ĕr jìn xīn yòu ĕr lí rén]
A phrase meaning something enters through the left ear and goes directly into the heart, while simultaneously leaving via the right ear and distancing itself from others, which metaphorically describes an experience of deeply feeling things internally without necessarily expressing outwardly, emphasizing selective memory/retention and emotional processing. A rather bittersweet commentary on listening selectively and guarding oneself.