How to judge whether the scene in a movie or TV series is a real scene or a special effect in the later stage of a factory shed?

Special effects include film special effects, post-special effects and post-film. Among them, the late stage of film and television includes late special effects and film special effects, and the late special effects include film special effects. Generally speaking, it should be in this order. Special effects have the widest coverage. Movies, music, stage scenes and scenery all belong to the category of special effects. Post-film refers to the post-production of TV, movies, commercials, promotional films, documentaries, etc., including special effects production and editing.