One of the most popular games at any casino is Keno. It is a game similar to the big state or provincial lotteries. This game originates from China where it was first introduced by Cheung Leung in 187 BC. Still the origins of the game are really a bit of a mystery. Several different versions exist.
The most commonly taken opinion is that Cheung Leung invented this game when his army ran out of money during some war. The citizens refused to contribute additional funds to the fruitless cause of the war. So the emperor tried to work out a strategy of generating the necessary finances. Finally, Cheung had the brilliant idea of creating a game that would appeal to the huge numbers of people under his command, while simultaneously generating a bit of cash to cover his expenses. Keno was so successful that it can be said to be the reason for Cheung's victory. The Great Wall was also built with the help of the money that gave keno! The game soon became known as the White Pigeon game, since carrier pigeons were used to inform surrounding towns and villages of the winning numbers.
The keno board didn't always look the same way. The Chinese classic characters were used instead of numbers. The total of 120 characters was used in the game but the number reduced to 80 in the long run.
The game arrived in the US in the mid 1800's when thousands of Chinese immigrants came to work in the mines and on the railroad. The fact that gambling games were forbidden didn't prevent the Chinese from playing and spreading it all over the States. It continued to use Chinese characters and thus obviously didn't enter popular mainstream American culture until it was modified to include the numerical system.

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