说桑心其实桑感情
[shuō sāng xīn qí shí sāng găn qíng]
A play on words that translates roughly as 'Talking about the mulberry (sang) tree heart but actually it means heartfelt emotions.' It indicates a subtle or indirect way of expressing deep emotions using wordplay. Here ‘Mulberry’ sounds like a similar Chinese word for deep or heartfelt, implying true feeling expressed via poetic means