人比黄花瘦
[rén bĭ huáng huā shòu]
This phrase '人比黄花瘦' (A Person Thinner Than the Chrysanthemum) comes from an ancient Chinese poet's work, which vividly describes a lady who becomes thin and delicate as the chrysanthemum because of endless longing and yearning. It often expresses deep emotions or worries leading to physical changes.