What does black symbolize in Ai Qing's Selected Poems?

Black represents melancholy and negative emotions. Throughout all Ai Qing's poetry creation, there is a general rule: bright and positive emotions are often described by yellow, red, blue and green, while melancholy and negative emotions generally correspond to gray, black, earth and purple. Ai Qing's poems are not just about writing colors or expressing emotions, but combining the use of colors with the expression of emotions seamlessly.