哭并不代表屈服笑并不代表快乐
[kū bìng bù dài biăo qū fú xiào bìng bù dài biăo kuài lè]
Translated, this says 'Crying Does Not Indicate Surrendering and Laughing Does Not Indicate Happiness.' It conveys complexity about the relationship between external emotions (crying and laughing) versus one's internal mental states. People express different kinds of emotions sometimes that do not accurately portray what they truly feel inside.