少年红唇多薄不适合允烟菇凉双眼明亮不适合流泪
[shăo nián hóng chún duō bó bù shì hé yŭn yān gū liáng shuāng yăn míng liàng bù shì hé liú lèi]
Translated literally as 'thin red lips not suitable for smoking' and 'bright eyes not meant to cry.' It poetically describes a young person who should preserve their youthful beauty by staying away from harmful habits like smoking and not wasting tears. The word 菇凉 (girl) adds an internet slang touch.