Playing cards is not easy. It has nothing to do with the number of strokes. Because there are fewer bars, the experience summarized may be biased.

Maybe I misunderstood what the landlord meant. It is difficult to open a bar, and it is even more difficult to open several bars. In the national standard, one bar is only once or twice, while the four bars are 88 times. This reflects the difficulty of opening multiple bars.

If you want to use mathematics to calculate quantitatively, I am afraid it is too difficult and unnecessary. Because mahjong has a fascinating feature that it is complex and changeable.