Guiyang Mahjong Excavator is a special mahjong rule, and its algorithm is as follows: 1. The basic points of Hu card are: Pinghu 1 fan, big pair 2/fan, hidden bar 1 fan, flowers on the bar 1 fan, touching yourself 1 fan, and the shooter does not deduct points.

2. Catch the chicken: When there is a player's Hu card and there are still untouched cards, open the first card, and the last card of this card is "chicken" (if you turn 2 cards, 3 cards are chickens). Then look at all players' hands and add a few "chickens".

3. Charge Chicken: After the card is played, the first "chicken" played by the player is the charge chicken, which is counted twice.

4. Responsible for the chicken: After playing the card, a player plays a "chicken". If the player can't play this round, he will be responsible for all the players' "chicken" money.

5. Multi-shot: If more than one player plays cards at the same time, the shooter should pay the corresponding score for each player.