Keno, a bingo-like or a lottery-like gambling game, is played nowadays at practically every casino. Keno appeared in China in 187 BC. But the appearance of keno is wrapped in a mystery. There can be found several different opinions.
The generally accepted theory is that the game was invented during some war in China when the army needed money badly. The head of state had no money support of his subjects. So the emperor tried to work out a strategy of generating the necessary finances. Cheung found an excellent solution to this problem: he created a very popular game - keno. Keno helped Cheung win that war. The Great Wall was also built with the help of the money that gave keno! Later keno was known as the White Pigeon game as people of surrounding villages were informed of the winning numbers by carrier pigeons.
In the past rather than having a board of just numbers on the original keno boards, they used classic Chinese characters. The total of 120 characters was used in the game but the number reduced to 80 in the long run.
In the middle of the 19th keno was brought to the US. At the beginning keno was out of law. But it wasn't a real obstacle for the immigrants. 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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