A couple who haven't seen each other for many years revisited their hometown in the early spring of the Summer Palace due to a suddenly discovered love letter. They seemed to see each other in the past, and they also seemed to see the future in the past. In the overlap of time and space, life continues
| Actor | Role |
|---|---|
 Chen KunNot listed | Not listed |
 Bai BaiheNot listed | Not listed |
 Li GengxiNot listed | Not listed |
 Huang MinghaoNot listed | Not listed |