In the Mood for Love
2046 is the number of the hotel room in "In the Mood for Love" in which Chow Mo-wan (Tony Leung Chiu-wai) and Su Li-zhen (Maggie Cheung) meet to write their kung fu novel serial. It is the number of a hotel room occupied by Lulu, and later by Bai Ling at the Oriental Hotel, while Mo-Wan's room number is 2047.