Chuugoku Janshi Story: Tonpuu

At the Game Over screen, hold B & Start until you begin where you left off.

While playing the game, instead of pressing A to reveal the Mahjong title, press Up & Down 5 times. If done right, you'll get the Mahjong title, but if you press Up or Down, you can select any symbol you want

At the title screen press Left 3 times, Right 3 times and then Start.