If the last sentence is to write a scene, giving people a sense of extension of the picture, it is the so-called unfinished business.
Lyricism by borrowing scenery is generally the mutual reflection of the scenery in the last film and the feelings in the next film.
There is also a musical scene to set off sadness in common situational relationships (that is, the scenery written is beautiful, but the more beautiful the author is, the more sad it is)