"Mirrored" Opponent

I have a problem. My game has specific game field which consists of two parts. For example: top and bottom. On the bottom side located player who directly play from the device, on the top side - his opponent. Bacasue the game is online all player moves must be displayed on the screen, opponents moves must be reflected on the players screen from top side. Game examples: Hearthstone, Clash Royale.