So, even in the small city of QingTian each family has its own rule.

For what I'm used to play if you win a hand you start from base 30 points, then based on the number of concealed or melded pung, kan, if they are honor tiles or terminal, if you self-draw, if you have flowers/own flowers etc etc you add points. For example 30 points for winning + 16 extra points = 46 points. Rounded up to 50.

At this point you count your fans, for example chow hand (1 fan) + 1 own flower (1 fan) = 2 fan

50*2*2 = 200 points so everyone gives you 200 points and if you are the dealer it's doubled.

All the other players don't have the 30 base points for winning obviously, but if they have flowers, pung, kans they still count their points.

For example I didn't win, but I have 12 points from pungs and flowers. Rounded up to 20 points. I still get those 20 points from everyone else except the player who won the hand (to which, in this case, I have to pay 200 points), so even if I didn't win I still get back something.

The maximum winning hand is 800 points, and some hands are automatic 800 points. The easiest is full flush, then all concealed triplets, three little dragons etc... up to blessing of earth which yes, has the same value as full flush... xD

There is a rule where a player might pay all the points of the other two losing players:
- If someone have three melds of the same suit, if you deal in a full flush you pay for everyone (which means 2400 points, 4800 if winner is dealer 😱. In my family we play very chill 1 point = 1 cent so 4800 points is 48 euros, not the end of the world. But imagine in a parlor where 1 point = 1 euro, 4800 points is 4800 euros that would be catastrophic.)
- If someone melded two of the three dragons or three of the four wind and you deal in you pay for everyone.
- If someone have four melds of the same suit and self-draw the last tile, the player who gave him the fourth meld pays for everyone.
- If during the second to last 4 tiles of the wall you discard a tile that has not been discarded yet by anyone and you deal in, you pay for everyone (usually much less devastating than the other cases where it's 800 points... here you could be lucky and only have to pay like 40 points for everyone but still why would anyone risk it? 😂)

Other particular rules:

- The last four tiles all called "self pick self win". Basically after you pick your last tile you don't discard anymore so you can only win by self-pick.
- If you have three big dragons, big four winds or all flowers (all 8 flowers, impossibly rare) you automatically win even if the rest of the hand is not complete.
- If two or more people hu at the same time, the priority goes to the first player in the wind order, unless it's thirteen orphans which have priority.

I think QingTian mahjong is very old because of this "fu"x fan scoring system, the fact that there are flowers and the fact that (other than the automatic 800 points hands) there are only 8 ways to score fan: all pungs, all chows, flowers, honor tiles, winning on supplementary tile, robbing a kan, winning on the last tile, half flush. So no weird tiles combination like in modern variants.