Ai Qingyuan is a painter. In The North, he explained how the author uses sound, light and color to create poetic images.

Ai Qing plays a melancholy tone full of pity with symbolic and suggestive techniques, and at the same time gives people sad and gloomy hints and infections with light yellow and gloomy land tones. This is probably the beauty of personality formed by Ai Qing's aesthetic exploration of new poetry: he is not only good at using realistic methods to form realistic images, but also fully expresses his unique feelings about life, achieving the perfect unity and even integration of external objective images and internal rational world; He is also good at using romanticism or symbolism to form a typical imaginative writing image to entrust or conceal the poet's yearning for life and the future.

Street performers, beggars, mending women, wheelbarrows, sad north, misty wilderness and barren fields ... The images of suffering he wrote infiltrated into deep, grayish yellow and gloomy cold colors, causing suggestibility and bringing readers a gloomy and depressed feeling, which fully showed the tragic beauty and gloomy beauty of a beautiful thing being destroyed. This is the condensation of Ai Qing's patriotic feelings and feelings for the people.