The title refers to a poetic compilation published by the character in the movie played by Leung.

The story starts at a book signing event and leads to the memories of the two lovers encounters.

Zhou Yu maintained the relationship by commuting on the train, hence the title of the movie.

During the train trips between Sanming and Chongyang, she also meets Zhang Qiang, a veterinary surgeon.

Gong Li plays two characters who only differ by their hair styles, namely Zhou Yu and the short-haired Xiu.