When a game character appears firstly in the game,
generally its picture files and action scripts are called at the
same time, after that, voice data and other large resources are
needed. According to this rule, we use an association rules
stored previously to predict required voice and other large
multimedia data after some basic processing of game
characters. These data will be read into the memory in
advance and wait for being called, so as to achieve the
purpose of pre-reading and make the game more real-time.