The scoring rules are as follows: add the score of the ball with the highest score among the colored balls falling into the bag to the opponent.
The lowest score is 4 points, and the highest score is 7 points, that is, 2 points and 3 points are also fined 4 points, and the highest penalty for black balls is 7 points.
One side's foul will give the other side extra points, not deduct their own points.
If there are only colored balls left, we should play from low to high. If you make a mistake, you should give your opponent extra points according to the above principles. If you make a mistake, you should take the ball out and put it back in its original position.