Jiang shi fu xing zi is a 1991 Cantonese-language Comedy Horror film. A tourist group is forced by an accident to stay at a deserted village. The travelers discover a big diamond and steal it. Unfortunately, the diamond is cursed and enables a monster to gain incredible power. He forces five vampire kids to bring him blood from the travelers in order to rejuvenate. The kids are unable to complete the task and are caught by the humans. The monster is furious and prepares to kill the little vampires and the travelers.. Written by Anonymous. Jiang shi fu xing zi stars Billy Lau in the title role along with an ensemble cast including Sandra Kwan Yue Ng, Fui-on Shing, Frankie Chan, Amy Yip, Ching-ho Law and Suet Ngai. It was released on 16th May 1991.