Hu Shiyun, who transmigrated through time to the early twentieth century, meets Zhou Yun, who also came from the future. After Shanghai falls, the two are forced to part in haste. Once Hu Shiyun reaches Nanjing, she and Zhou Yun keep in touch through letters, sharing the confusion their transmigration has brought and the pain of being unable to change anything. From Nanjing to Beiping, their story, from beginning to end, is told through these seven letters.
Dear, please be sure to finish it. I think you wrote it very well. You showed part of the plot to the readers in the format of a letter. The first person person gives people a strong sense of immersion, as if they were immersed in the perspective of the heroine.