你在我左边第二根肋骨你在我左边第二颗纽扣
[nĭ zài wŏ zuŏ biān dì èr gēn lèi gú nĭ zài wŏ zuŏ biān dì èr kē niŭ kòu]
'You are in my second rib on the left side and you are in my second button on the left,' uses poetic expression to metaphorically place significant other close to one’s heart and daily outfit, suggesting their closeness, importance, and involvement in every aspect of personal life.