Ye Liu and Jun Hu worked on their rapport only four times before production, playing basketball (of which Liu at 6-foot-1 was a star player at school) and dining. They spent time with their respective girlfriend and wife present, to clarify their romance will only be fictional.
Director Stanley Kwan auditioned more than 100 actors in both China and Hong Kong for two months, finally deciding on Ye Liu based on a photo given by Liu's assistant director from his debut Postmen in the Mountains (1999).