In the exhibition, the automatic play time interval of ppt should not exceed 10 second, so that visitors can have a basic understanding of the exhibits in a short time. However, if the displayed content is very complicated or needs deeper understanding, the automatic playback interval can be appropriately extended, but it should not exceed 20 seconds.

In order to ensure the exhibition effect and user experience, the automatically played content should be optimized and simplified according to the exhibition content, so as to avoid information overload and effectively attract the audience. Of course, the best way is to adjust according to different audience feedback.