Overlooking is often used to express the overall style of a scene. For example, at the beginning of the film, after explaining the detailed landscape of the overpass in Beiping, it shows the whole picture of the overpass from a overlooking angle, leaving the audience with an overall impression of all kinds of old Beiping. In the film, when the Peking Opera Farewell My Concubine is staged, the overhead lens is often used to show the grandeur on the stage. In the scene where the Japanese army shot and killed innocent people, the lens pushed the strange and horrible atmosphere of the execution ground to the extreme with its distant vision and cold picture color. Overlooking the camera can also be used to express certain emotions. For example, during the Cultural Revolution, a fourth-grade student coerced Duan Xiaolou to pat a brick, which highlighted the smallness and helplessness of the small building and hinted at his cowardice and selfishness.