Chessboard Club is a social entertainment place with the theme of board games, providing various entertainment items such as board games, as well as simple catering services such as drinks and snacks. Mahjong hall is a place where mahjong tiles are the main entertainment tools, providing mahjong tables and related facilities for people to play mahjong games. There are obvious differences in theme and entertainment between chessboard club and mahjong hall. Chessboard Club is not a mahjong room.