What is the situation that a mahjong has four identical cards?

There are four identical dark bars. At the same time, it is also a mechanism to increase the income of victory. In the process of playing cards, I feel that the four cards are exactly the same. If I push them secretly, it will be a hidden bar, twice. After a lap, you can flop or not. After the dark shot, the dealer has 10 left, and other players have 9 left.

The exposed column is the card above the last deck, and the hidden column (the first column in the game) is the card below the last deck. If the hidden column is the second column, then draw cards from the back in order.

When someone plays a card, they have three identical cards in their hands, that is, lever cards, which are called open levers. They fall down along this lever, then grab a card at the end of the row and play a card they don't need.

You have three identical cards in your hand, and you catch another identical card, which is called the dark bar. You did. People don't know what card it is. Then you grab a card at the end of the row and play a card you don't need. "Open the lever" takes precedence over "eat". If the card you want to leverage happens to be the card that the dealer will eat next, then the card-eating fails and the leverage succeeds.

Mahjong originated from Guangdong, Hong Kong and Macao in China, commonly known as sparrow. It is a game and entertainment appliance invented by ancient people in China. Generally, it is a small rectangular box made of bamboo, bone or plastic with patterns or words engraved on it. Each mahjong deck in the north has 136 cards, and there are eight more cards in the south, namely, spring, summer, autumn and winter, plum, bamboo, orchid and chrysanthemum, totaling 144 cards.

Other families can only "touch" or "bar". When a player decides Hu, he can take any card you want. At the same time, when many families eat Hu, only the big one is called Hu, and the rest is also called cut Hu. Hair powder (from small to large): chicken beard, miscellaneous, uniform, big brother, thirteen orphans.

The above contents refer to Baidu Encyclopedia-Mahjong.