他久居我左心房她深居我右心房
[tā jiŭ jū wŏ zuŏ xīn fáng tā shēn jū wŏ yòu xīn fáng]
This poetic expression means 'he resides in my left heart chamber, she resides in my right heart chamber.' It symbolizes that both he and she occupy important positions within the owner’s heart, indicating deep feelings for two people simultaneously.