I'm guessing 你 mean restarting your town. In the original Animal Crossing game, when the animal comes on the screen and asks 你 if 你 want to go into your town, select the "Not yet..." 或者 "Before I go..." option. I'm not sure exactly how it's worded, but it's the option that isn't "Yes." The animal will then give 你 some options. Select "Other things" and then he'll give 你 some 更多 options. One of those options is "Start a new town" - This option will erase your current town and let 你 start a totally new game. If 你 want to keep your town but start a new one, just insert a new memory card into the Gamecube and then start up the game.