你对他笑有没有看见我在哭
[nĭ duì tā xiào yŏu méi yŏu kàn jiàn wŏ zài kū]
The literal translation goes like 'You are smiling at him, have you seen me crying?', suggesting a painful scene where one feels ignored or left out in unrequited love, expressing deep-seated sadness or jealousy in relationships.