我笑了多久心就疼了多久我哭了多久心麻木了多久
[wŏ xiào le duō jiŭ xīn jiù téng le duō jiŭ wŏ kū le duō jiŭ xīn má mù le duō jiŭ]
This describes the internal pain accompanying outward laughter and emotional numbness through tears, reflecting a mix of joy hiding pain and crying until feeling nothing. A poignant expression of complex emotions.