Beijing Hairun Pictures Co., Ltd., Huaxia Film Distribution Co., Ltd., CCTV 6 Movie Channel present ; screenplay by Wai Ka Fai, Yau Nai Hoi, Ryker, Chan, Yu Xi ; produced by Johnnie To, Wai Ka Fai ; directed by Johnnie To
Edko Films Limited, Sil-Metropole Organisation Ltd., Focus Films Limited ; produced by Rosanna Ng, Chan Pui Wah, Dele-Liu ; produced by Bill Kong, Andy Lau ; written and directed by Alan Yuen