What is the difference between American and Chinese mah-jongg?

What is the difference between American and Chinese mah-jongg? What is the difference between American and Chinese mahjong? Traditional Chinese mahjong sets have 144 tiles, while American version is played with eight additional joker tiles and different score cards.

What is the difference between American and Chinese mahjong? Traditional Chinese mahjong sets have 144 tiles, while American version is played with eight additional joker tiles and different score cards.
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