The proper use of color plays an irreplaceable role in creating the atmosphere, and also allows the audience to enjoy a different visual effect, which directly hits the hearts of the people. In this color, the truth is presented to the audience step by step, so that it will not appear so abrupt. For example, grayish black. At the beginning of the film, when the king of Qin called a strong man to see him, the whole picture was gray and black, which brought a heavy and depressing atmosphere to the audience. At the same time, the film also uses this tone to convey the inner world of Qin Wang to the audience.