In actual Mahjong combat, poker is an important technical action. It can not only increase the number of times, but also change the direction of the game. Many Ma friends often ask: "How many pieces did you play mahjong?？”其实，杠牌后胡牌的张数并非固定，而是根据杠的类型和牌型有所不同。本文将为您详细拆解杠牌后的牌数变化，并重点解析“杠上开花”的胡牌规则。

一、杠牌的基本类型与牌数变化

麻将中的杠分为三种：Minggang、the dark barandmending bar（又称加杠）。不同类型的杠，对牌数的影响也不同。

1. Open bar: Make up one card from the card wall, and the number of cards remains unchanged

A clear card means that you have three identical cards in your hand, and when other players play the fourth card, you choose a card. After the clear bar, you need to make up a card from the end of the card wall and then play a card. At this point, the total number of cards in the hand remains the same (still 13 or 14, depending on whether the cards have been played). Therefore, the clear bar itself will not change the number of cards required, but will change the card type structure and may increase the number of times.

2. 暗杠：同样补一张，但番数更高

暗杠是指自己手中已有四张相同的牌，选择杠出。暗杠后同样需要补一张牌，手牌总数不变。暗杠的番数通常比明杠高，但杠牌后胡牌的张数规则与明杠相同。

3. 补杠：先碰后杠，注意抢杠风险

补杠是指已经碰过的牌，后来又摸到第四张，选择加杠。补杠后同样补一张牌，手牌总数不变。但补杠存在被其他玩家“抢杠胡”的风险，需要谨慎。

2. Blooming on the bar: the special situation of Hu card immediately behind the bar

"Blooming on the bar" means that the card that is filled up after the bar can just give you a good card. In this case, the number of Hu cards is calculated the same as that of ordinary Hu cards, but the number of times will be increased additionally. So,How many pieces did you play mahjong?How to calculate when blooming on a pole?

In fact, when flowers are blooming on the bar, your card is the one to make up, so the number of cards you have is 1. However, it should be noted that blooming on the bar is usually regarded as self-touching and will be added. For example, in national standard mahjong, the flowers on the bars are added 8 times; in local rules, it may be added 1 times or more.

Conditions and limitations for blooming on the bar

  • The card must be played after the card is taken, and the card cannot be counted after the card is taken before the card is taken.
  • Blooming on the bar usually requires self-touching, not shooting.
  • 有些规则中，杠上开花可以叠加其他番种，如清一色、碰碰胡等。

3. Common misunderstandings about the number of cards after the card bar

Many novices mistakenly believe that there will be one more card in their hand after the card is stacked, making it easier to play cards. In fact, if you make up one card and then play another card, the total number of cards in your hand remains unchanged, but the card type is changed. Therefore,How many pieces did you play mahjong?The answer to this question is not "one more card", but "unchanged, but may change the scope of playing cards."

例如，你原本听三张牌，杠牌后可能变成听一张或两张，也可能听更多张。这取决于杠牌后打出的牌和补进的牌。因此，杠牌前需要仔细计算，避免杠后反而减少胡牌机会。

4. Differences in cards and cards under different Mahjong rules

Mahjong rules in different regions have different regulations on bars and flowers on bars:

  1. National standard Mahjong: The cards are replaced after the bars. The flowers on the bars are added to 8 times. The open bars, hidden bars, and repair bars have the number of times.
  2. Sichuan Mahjong: Make up the cards after the bars, and double the flowers on the bars, but usually there are extra points for "windy and rainy".
  3. Guangdong Mahjong: After the card is used, the card is replaced. Blooming on the card may be considered self-defeating, depending on the rules.
  4. Japanese Mahjong: After the card is tied, the card is replenished from the ridge card. The flower on the bar (the flower on the ridge) is counted, but it needs to match the relevant service type.

Therefore, in actual combat,How many pieces did you play mahjong?It also needs to be judged in conjunction with local rules.

5. Summary: The number of cards remains unchanged after the cards are stacked, but the opportunities may change

综上所述，杠牌本身不会改变胡牌所需的张数，但会改变牌型和听牌范围。杠上开花时，胡牌张数就是补的那一张，但番数增加。因此，杠牌前要权衡利弊，避免盲目杠牌导致失去胡牌机会。希望本文能帮助您更清晰地理解How many pieces did you play mahjong?的规则，提升牌技。