姑娘眼睛多美不适合流泪少年薄唇多软不适合吸烟
[gū niáng yăn jīng duō mĕi bù shì hé liú lèi shăo nián bó chún duō ruăn bù shì hé xī yān]
'Girls' eyes are so beautiful that they don't suit tears, and boys’ lips so soft they're unsuited for smoking.' It expresses the pure beauty and delicacy of youthful features that shouldn’t tarnished by negative elements (e.g., smoking or weeping). A call to protect such preciousness or a nostalgic reflection upon lost innocence.