Mahjong 136 randomly draws 14 cards. How to calculate the probability of winning?

LZ, your question is a very huge project ... If the special card shapes of seven pairs and thirteen orphans are excluded, then there are several card shapes in Tianhe: Pinghe, Sanzhi+Single Secret Carving, Erzhi+Second Secret Carving, Third Secret Carving and Fourth Secret Carving. Among them, there are 7 kinds of 28 editions, which can only form a secret engraving; There are 27 kinds of 108 cards, which can be composed of straight boards and secret engravings. What the people upstairs are talking about is that the world is carved in four dark places: first, choose four cards from 34 kinds of cards (there can't be the same cards between the faces in four dark places), and choose three cards from each kind of four cards. Finally, the sparrow head should choose one of the remaining 30 kinds and two of the four cards of that kind (there is only one card left in the four cards that make up the secret engraving, so it is impossible to pair up). Three cases of secret carving: c (3,34 34) * c (3 3,4) c (1,34-1) c (2,4) * ... The remaining straight strokes are very complicated, and it will be a lengthy formula to list. Not only should we consider whether the engraved part and the sparrow head part are plates,