Fan is the scoring unit in Hong Kong mahjong and in MCR. Hong Kong agrees a minimum before the deal. MCR needs eight fan from a fixed list.
American mahjong does not score in fan. It scores the printed line.
If someone names a fan minimum, that table is not American. See Hong Kong and MCR.
A fan minimum means it is not American
Hong Kong agrees a minimum before the deal. MCR needs eight fan from a fixed list. American mahjong does not score in fan. It scores the printed line.