你笑靥如花我悲伤如发
[nĭ xiào yè rú huā wŏ bēi shāng rú fā]
Your Smile Is Like a Flower, My Sadness Like My Hair contrasts beautiful joy with personal sorrow. It represents a stark contrast between another’s happiness and one's own sadness which can also imply selfless affection towards someone you care about deeply even though you suffer.