It is a comedy story. If it is expanded and written, many small interests can be added into it, and it can at least be doubled in length.However, when the author writes a story, in many cases, it is just to express an imagination, an idea, and he doesn't like to be too "spreading", so he rarely makes more arrangements in details that have nothing to do with the main idea.In this story, the connection between the body and the soul was touched for the first time, and many subsequent stories have developed a lot on this idea.