Desc: Fai seung dat yin: Directed by Tat-Chi Yau, Johnnie To. With Simon Yam, Ching Wan Lau, YoYo Mung, Ruby Wong. A group of inept Mainland criminals botch a jewelry store robbery. The cops, led by the straight-laced Ken and the wise-cracking Sam, begin to investigate the case and quickly confuse the jewel thieves with a group of hard-ass Mainland robbers staying in the same area.