Chun guang ying hua (Firm)

Two neighbors, a woman and a man, form a strong bond after both suspect extramarital activities of their spouses. However, they agree to keep their bond platonic so as not to commit similar wrongs.

A young man, who has tried to forget his lost love by meeting different young women, starts to write a novel about a young man falling in love with a machine-made woman on the 2046 train. 2046 is the number of the room where he met his lost love.