My family didn't play mahjong, ever. Whatever exposure I had to it was by watching Hong Kong movies. I DO remember ONE time, when I was very little, watching my maternal grandmother play it, when we went on one of our annual trips to visit my mom's family.
Anyway, Xiayu's parents stayed with Cindy for a few months while they were here in the States, and I got a chance to watch them play and learn a thing or two more about the game.
Pretty neat stuff.