我羡慕有蓝颜疼的女生
[wŏ xiàn mù yŏu lán yán téng de nǚ shēng]
It means: 'I am jealous of those girls who have boys treating them lovingly.' The word 'blue face' or '蓝颜' (lan yan) here represents the boyfriends or good male friends who are considerate and gentle with girls, and in Chinese internet slang this means an outstanding and charming man.