梨花带雨海棠落泪
[lí huā dài yŭ hăi táng luò lèi]
Draws a poetic picture connecting pear blossoms covered in dew or light rain (which can remind of tears) together with haitang (a specific type of shrub whose pink-white flowers evoke feelings of melancholy). Used here perhaps as metaphor for beauty marked by sadness, referring to emotional state through natural imagery.