The poster uses hand shadow game to express the theme of shadow after dark, symbolizing the innocence and cruelty in the problem of human trafficking, in order to arouse reflection and warning. Hand shadow is used to show the shapes of snake, fox, jungle, mountain and river, corresponding to the scene association mentioned in the lyrics. Snake and foxe are symbols of violence and deception in human trafficking. The snake is the symbol of danger and evil, and the snake eye is made up of sharp teeth; the fox is the symbol of cunning and deception, and the fox eye is made up of cold fence. The composition of the picture is composed of coiled snake tails, symbolizing the state of being trapped and difficult to get rid of. There are forests, mountains and rivers in the background, symbolizing a seemingly peaceful world. In terms of color, it is mainly black, supplemented by gradient color, with strong contrast. It not only wants to express the above theme, but also wants to express the music rhythm in the lyrics.